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Lake And Pond Management

Success Stories And Case Studies

SOLitude Lake Management is pleased to offer various case studies and success stories highlighting some of the innovative lake and pond management solutions we offer to aquatic property owners across the United States.

We invite you to browse through the success stories below or contact us to learn how our innovative lake and pond management services can benefit you.

Nuisance Aquatic Vegetation Controlled in Drinking Water Reservoir   

Foxborough, MA
314 Acres

Following a lengthy 2-year permitting process, this drinking water reservoir was treated with Sonar AS (fluridone) in 2009. Prior to treatment, the shallow reservoir supported dense, nearly 100 percent cover of non-native fanwort and variable watermilfoil which resulted in almost a complete loss of open-water habitat. Treatment was performed over the course of 4 applications between May and July of 2009.

The initial treatment was extremely successful achieving nearly complete control of the target species for almost two years. Continued monitoring and targeted annual/biennial spot-treatments with Sonar and Reward (diquat) have maintained desirably low coverage of the target non-native species in reservoir. The native plant composition has continued to recover with large areas previously infested with fanwort and milfoil now supporting dense growth of native plant species. 

Golf_course_pond_Haymarket_VA_3.25acres_BEFORE_algae_treatment-4  Golf_course_pond_Haymarket_VA_3.25acres_AFTER_algae_treatment-2    

Access to Open Water Restored with Successful Hydrilla Treatment  

Alexandria, Virginia
1.5 Acre Treatment Area

This affluent condominium community is located on the waterfront on the tidal freshwater Potomac River in Alexandria, Virginia. The Potomac is severely infested with hydrilla, and no widespread attempts have been made to control it. The residents wanted at least their waterfront area to be clear of the plants. The topped out hydrilla was not only unsightly, but it caused a lot of vegetation and debris to be trapped near their docks and bulkhead, including duckweed, trash and dead animals. It also caused difficulty for residents in accessing the river for kayaking and canoeing.

SOLitude performed an initial treatment for hydrilla on August 24, 2015. We performed post-treatment monitoring on September 2, and observed that they hydrilla was heavily injured and dropping off the surface, with no adverse effects to non-target organisms. We performed a follow-up treatment on September 11 and by the time of the post-treatment monitoring on September 17, there was little evidence of any hydrilla within the treatment area. The profuse duckweed that was in the area was also controlled by the treatment.

Golf_course_pond_Haymarket_VA_3.25acres_BEFORE_algae_treatment-4  Golf_course_pond_Haymarket_VA_3.25acres_AFTER_algae_treatment-2    

Infestation of Filamentous Algae Controlled With One Application 

Smithfield, Virginia
2.45 Acres

This medical center stormwater pond is 2.45 acres with a 4-foot average depth and minor to moderate flow. It has had a history of problems with Pithophora, a filamentous algae. The pond had previously been part of a par-3 golf course and driving range and is located right off of busy route 258. These factors can contribute to large amounts of nutrient runoff into the pond, as well as, nutrients from the surrounding land that had previously been fertilized. This caused algae blooms that are harmful to the waterbody’s health and are a detriment to the overall aesthetics of the pond and surrounding area.

The initial treatment took place on July 15, 2015, when the surface was almost completely covered in filamentous algae. A low volume tank was used and sprayed out of a small john boat. The algae cleared up in about a week and has remained clear. SOLitude has followed up with smaller applications of algaecide due to continued growth of minor filamentous algae around the edges.

Golf_course_pond_Haymarket_VA_3.25acres_BEFORE_algae_treatment-4  Golf_course_pond_Haymarket_VA_3.25acres_AFTER_algae_treatment-2    

Dense Surface Duckweed Eradicated Without Stressing Fishery 

Scottsburg, Virginia
2.5 Acres

This private pond receives drainage from the local watershed, primarily from runoff on the 200 acre property. The pond has recently been stocked with fish and was being managed as a largemouth bass fishery. Prior to treatment, a dissolved oxygen and temperature profile was also recorded to determine the biological demand on the pond. At the time of the initial treatment, duckweed covered approximately 75 percent of the pond’s entire surface area. Due to the amount of biomass present and the low dissolved oxygen levels found throughout the water column, the pond was treated with slow acting Sonar ONE to minimize the risk of a fish kill.

On July 29, 2015, Sonar ONE was applied near the upstream inflow of the pond. Upon returning for a FasTest on August 20, nearly 100 percent of the duckweed was eradicated from the pond, and the little that remained was bleached white. Therefore, no samples were collected and no FasTest was conducted as a follow up application was deemed unnecessary due to the success of our initial treatment.

Golf_course_pond_Haymarket_VA_3.25acres_BEFORE_algae_treatment-4  Golf_course_pond_Haymarket_VA_3.25acres_AFTER_algae_treatment-2    

Toxic Cyanobacteria Eliminated from Drinking Water Reservoir 

Crozet, Virginia
104 Acres

This drinking water reservoir is found in an affluent community with citizens who are highly concerned about the use of herbicides and algaecides in their drinking water. SOLitude was hired in 2013 to provide an Integrated Pest Management Program for five reservoirs, and to perform ongoing consultation and treatment recommendations for the management of cyanobacteria blooms.

The weekly algal monitoring results performed on October 20, 2014 showed that the cyanobacteria concentration in the reservoir had exceeded the action threshold of 5,000 cells/ml at all three sampling depths, so a treatment plan was initiated. On October 28, 2014, SOLitude applied SeClear, treating approximately 16 acres of the deepest part of the reservoir, and targeted the upper 15 feet of the water column. Half of the product was applied as a surface spray and half was injected with drop hoses to a depth of 7 to 8 feet.

The algal sampling performed on November 4, 2014 showed the there were fewer than 500 cells/ml of cyanobacteria at all sampling depths. The treatment was extremely successful and no further treatments were required for the remainder of the year.

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Successful Treatments Control Golf Course Pond's Algae Issues

Haymarket, Virgina
3.25 Acres

This privately owned country club has several ponds on the SOLitude Annual Maintenance program. However, the upper hole #10 pond had a contract that did not include algae treatments. The pond is aerated with a surface fountain.

We visit the pond twice per month for maintenance service, and during our June visits the algae growth throughout the pond began to get worse and worse. The client approved a series of treatments beginning in July. The pond was treated three times before it cleared up and started looking wonderful again. The first treatment used a combination of Captain XTR mixed with Clipper and the second and third treatments used Captain XTR mixed with Diquat. The product was applied with a back-pack sprayer both times. The pond visit on August 14 found the pond looking great and we were able to stay within the course's budget.

Golf_course_pond_Haymarket_VA_3.25acres_BEFORE_algae_treatment-4  Golf_course_pond_Haymarket_VA_3.25acres_AFTER_algae_treatment-2    

Heavy Infestation of Pithophora Algae Now Under Control

Chesapeake, Virginia
1.0 Acre

SOLitude began managing this 1 acre condominium community pond in Chesapeake, Virginia, in the later part of 2012. The first service was in May 2013 and we treated a small algae bloom with Captain XTR, which quickly eliminated the algae. As quickly as that species of algae went away, large amounts of pithophora started showing. On May 30, we found the pond almost 100 percent covered with pithophora. Considering the full pond treatment with Captain XTR the previous month, we wanted to see if SeClear would kill the pithophora and give our client the long term results they were looking for.

The pond was rechecked on June 3, 2013. The pithophora was now thicker in the middle of the pond, no longer allowing the fountain to work correctly, but the shoreline pithophora had thinned and died off. We went back with Captain XTR mixed with Diquat SPC and did another broadcast spray. The pond was checked again four days later and the waterbody was about half covered with pithophora. On the afternoon of June 7, the pond was treated again with Captain XTR and Diquat SPC. When the pond was re-checked on June 13, all of the pithophora was gone and the pond looked great. For the rest of 2013, the pond did not require further treatments.

Since the last treatment of 2013, we have only had to treat the pond one time with Captain XTR for a minor algae bloom (May 2014). The residents are happy with the control of the algae blooms and the overall look of the pond, and we were able to keep the treatments under budget! 

Community_Pond_Chesapeake_VA_1.0_acre_BEFORE_Pithophora_algae-1-1 Community_Pond_Chesapeake_VA_1.0_acre_AFTER_Pithophora_algae-1

Water Shield on Private Pond Controlled With Renovate Max G

Nathalie, Virginia
1.1 Acres

This privately owned 1 acre pond is located on a large piece of land in Nathalie, Virginia. The client contacted SOLitude to gain control and effectively eliminate the water shield that was growing in a ring around the perimeter of his pond, covering about 0.5 acres. The initial treatment was started on June 20, 2014, with the plan of concentrating our treatment of Renovate Max G on and around the target plants that was growing from the shoreline and encroaching past the littoral shelf into deeper water. The weather conditions were nearly ideal for a treatment. We took initial photos and had plans to return in 4 weeks to monitor the treatment and follow up with a retreatment if necessary.

On our second visit on July 29 we discovered that the water shield had been effectively controlled. 90 to 100 percent of the water shield was dead or dying, and the overall coverage of the plant was declining. The pond looked fantastic in comparison to how it looked pretreatment. The customer was very happy with the results and SOLitude was able to achieve control of the plants under budget. The pond owner is now able to further enjoy fishing, boating, and swimming in his pond. 

Private_Pond_Nathalie_VA_1.1_acres_BEFORE_water_shield_treatments_1 Private_Pond_Nathalie_VA_1.1_acres_AFTER_water_shield_treatments_1

Prescription Eliminates Duckweed and Watermeal from Historic College Campus Pond

Williamsburg, Virginia
0.6 Acres

The subject pond is a highly visible pond on a college campus in Williamsburg, Virginia, that is rich in history and tradition among students. The college was not a contract customer and wanted to do a one-time treatment to eliminate the weed species. The 0.6 acre pond was almost 50 percent covered with duckweed and watermeal at the time of the treatment.

The initial treatment was performed on June 16, with a prescription to treat the water column with a combination of Sonar Genesis and Sonar One. A follow-up and Fastest were performed on June 26. The Fastest resulted in a concentration of 115.9 ppm. The higher concentration was a result of initially measuring the pond too large. The initial treatment was performed in the morning and there was no rainfall before the Fastest was taken. At the time the second Fastest was taken, the plants were already decreasing numbers and chlorosis was visible on the remaining plants. The progress of the treatment was checked every two weeks until the weeds were gone on July 21. The treatment was a success and the pond continues to look great. 

Campus_Pond_Williamsburg_VA_0.60_acres_BEFORE_duckweed_watermeal_treatments_1 Campus_Pond_Williamsburg_VA_0.60_acres_AFTER_duckweed_watermeal_treatments_1

Health and Beauty of Golf Course Pond Restored with SOLitude's Treatment Plan

Glen Allen, Virginia
3.0 Acres

This private Country Club was established in August of 1992 and is located in Glen Allen, Virginia. The 3 acre pond that was treated has had a history of problems with filamentous algae growth, duckweed, and also planktonic and blue-green algae. The fertilizers and pesticides used by golf course maintenance and the community wash into the pond via runoff, causing algae and weed blooms that are harmful to the waterbody’s health and are a detriment to the overall aesthetics of the pond and surrounding area.

On May 22 the pond was about 50 percent covered with a combination of filamentous algae and minor duckweed. Captain XTR and Diquat were applied throughout the pond, targeting the algae and weeds with the spray solution. The pond was rechecked on May 28 and there was already a remarkable improvement; the duckweed was mostly bleached and the coverage was greatly reduced. At our second visit on June 17, the filamentous algae had mostly disintegrated, leaving very minor coverage which was left to be controlled through the new maintenance contract.

SOLitude has followed up with applications of algaecide due to continued growth of planktonic and filamentous algae, but the initial treatments gave us and the client approximately two months of control. The client has been very happy with the results, noting a significant difference in the overall health and beauty of the pond compared to years past. 

Golf_Course_Pond_Glen_Allen_VA_3.0_acres_BEFORE_algae_treatments_1 Golf_course_pond_Glen_Allen_VA_3.0_acres_AFTER_algae_treatments_1

Golf Course Pond Becomes Attractive Feature with Captain XTR

Davidson, North Carolina
1.1 Acres

Golf course ponds are subject to high nutrient loads because of turf fertilization requirements. Even with good fertilization practices in place the reality is some of the fertilizer will end up in the ponds. As a result these ponds typically will have severe algal blooms and weed infestations. This golf course pond in Davidson, NC historically has had severe algal blooms. These algal blooms are unsightly and can lead to fish kills if not controlled.  Fortunately, Captain XTR once again proved to be too much for the algae and SOLitude was able to control this bloom with two applications. The pond is now an attractive feature on this signature hole. 

Golf_course_pond_Davidson_NC_1.1_acres_BEFORE_algae_treatments_1 Golf_course_pond_Davidson_NC_1.1_acres_AFTER_algae_treatments_1

SeClear Treatment Results in Fewer Algae Blooms and Improved Water Quality

Yorktown, Virginia
0.5 Acres

The subject pond is a privately owned 0.5 acre pond on a residence adjacent to Chisman Creek in Yorktown, Virginia. The owner has been an annual lake management client since 2004. Over the years, the number of algae blooms in the pond continued to increase, likely due to the large numbers of geese that reside on the property. During our maintenance visit in late June 2014, a significant Pithophora bloom was observed covering approximately 100 percent of the pond and a treatment plan utilizing SeClear was started.

The first treatment was started on June 25, utilizing SeClear and initially focusing the treatment at the littoral shelf in the inflow end of the pond. On July 2nd, a second treatment was conducted using SeClear. The pithophora algae did look affected from the previous treatment with much of the algae was grayish in color. Approximately 75 percent of the area previously treated was clear and only 40-50 percent of the pond remained covered in algae. The remaining area of algae was where the application was focused during the second treatment.

Two weeks after the second treatment, our goals were met. We observed a significant improvement in water quality and most, if not all, of the pithophora algae was gone. We performed a few minor spot treatments during the fall of 2014, but were glad to get good control of the pithophora bloom and experienced fewer blooms throughout the remainder of the growing season.  

Private_Pond_Yorktown_VA_0.50_acres_BEFORE_algae_treatments Private_Pond_Yorktown_VA_0.50_acres_AFTER_algae_treatments

Constant Battle with Pond Algae Won with Captain XTR/Diquat

Purcellville, Virginia
4.65 Acres

SOLitude has held an annual management contract for this vacation property pond since 2009. The pond has experienced severe sedimentation in the upper end, and the average depth upstream of the island (approximately 1 acre) is only about 1 foot. We are constantly battling algae in this area. The pond also experiences annual blooms of hydrilla and watermeal. Because of the heavy flow and size and depth of the pond, it is not cost effective to use Sonar or Galleon, so contact herbicides are our typical approach. 

We were notified that the client would be visiting the property in early August of 2014. At the time of our visit on June 12, the pond had only a small amount of algae in a few areas around the perimeter, which was spot-treated with a tank mix of Captain XTR and diquat. However, by our June 24 visit, the algae bloom had grown rapidly and was covering about 50 percent of the pond. We performed an application with Captain XTR with diquat to the upper end of the pond, and returned on July 1 to treat the rest of the pond with the same rate and tank mix. A final spot treatment with Captain XTR was performed on July 17 to address the minimal remaining algae. By July 31, the pond was clear of algae and looked great for the owner's visit to the property the following week. 

Private_Pond_Purcellville_VA_4.65_acres_BEFORE_hydrilla_and_watermeal_treatments Private_Pond_Purcellville_VA_4.65_acres_AFTER_hydrilla_and_watermeal_treatments

Vacation Property Algae Controlled Without Compromising Dissolved Oxygen Level

Madison, Virginia
0.3 Acres

This privately owned vacation property and vineyard has two small ponds on a SOLitude Annual Maintenance program. The upper pond is only a few inches deep and is heavily colonized with aquatic grasses and has frequent blooms of filamentous algae. The lower pond is fairly deep, and has a history of watermeal and planktonic algae. The lower pond is frequently used for swimming by the family. Neither waterbody is aerated, but there is heavy flow through the ponds.

We visit the pond twice per month for maintenance service, and during our August 29 visit, the lower pond was experiencing a severe planktonic bloom with a surface scum and a Secchi depth of less than 1 foot. The family was scheduled to visit the property for the Labor Day Weekend, so we wanted to ensure that the pond would have clear water and would be pleasant for swimming. Because of the low alkalinity (~20 mg/L), a chelated product was selected to minimize the risk of fish toxicity. We treated with Captain XTR in the lower half of the pond where the majority of the surface bloom was concentrated. The pond was rechecked on September 5 and no trace of any residual algae was found and the Secchi depth was almost 3 feet. 

Private_Pond_Madison_VA_0.30_acres_BEFORE_algae_treatments_1 Private_Pond_Madison_VA_0.30_acres_AFTER_algae_treatments

Community Stormwater Pond Transformed from Eye Sore to Attractive Feature

Chapel Hill, North Carolina
0.4 Acres

Stormwater ponds that are required for new developments often times can be an eye sore to communities if not maintained properly, as was the case with this pond in Chapel Hill, North Carolina. SOLitude was called in due to the pond being covered in floating algae mats and submersed vegetation that was aesthetically unpleasing and clogging the fountain regularly. SOLitude was able to selectively remove the algae and then target the submersed weeds.  Captain XTR was used to control the algae, both filamentous and macrophytic, and a combination of Nautique and a contact herbicide were used to control the slender and variable leaf pondweed. The stormwater pond is now an attractive feature for the community and the AquaMaster fountain’s pattern is always full and is providing adequate aeration to the pond. 

Community_Stormwater_Pond_Chapel_Hill_NC_0.4_acres_BEFORE_algae_treatments Community_Stormwater_Pond_Chapel_Hill_NC_0.4_acres_AFTER_algae_treatments

Recreational Pond Cleared of Target Weeds with Sonar ONE

Gordonsville, Virginia
0.75 Acres

This privately owned horse and hay farm has a small recreational pond that receives drainage from the entire property. The pond has become increasingly infested with aquatic weeds for the last 5 years. At the time of our initial visit in August 2012, there was approximately 20 percent coverage with watershield, 15 percent coverage with coontail, and minor duckweed around the perimeter. We provided a proposal for treatment, but the client opted not to treat until 2014. We began monitoring the pond in early May, but did not see any vegetation growth until late May.

On May 28, we applied Sonar ONE to the pond. There were several large rain events in early June, so we collected a FasTEST on June 11. The coontail was already exhibiting extensive chlorosis, but the watershield and duckweed did not appear affected by the herbicide. Our FasTEST result was only 5.6 ppb, so we treated with Sonar ONE again on June. We continued to monitor the pond for the next month, and the watershield and duckweed became chlorotic and began to drop from the surface. By early August, the pond was substantially clear of vegetation. We did have some late season regrowth of watershield in August, which was treated with a foliar application of glyphosate with good results. By early September, the pond was clear of the target weeds.

Private_Pond_Gordonsville_VA_0.75_acres_BEFORE_water_shield_coontail_duckweed_treatments_1 Private_Pond_Gordonsville_VA_0.75_acres_AFTER_water_shield_coontail_duckweed_treatments-1

Irrigation Pond Topped Out with Creeping Water Primrose

Raleigh, North Carolina
0.6 Acres

SOLitude was called to this driving range irrigation pond to help free up the irrigation intake that kept getting clogged.  The owner was tired of manually trying to remove the plant material that was now affecting his daily operations due to the plants aggressive growth.  A systemic herbicide and appropriate surfactant were used to bring down the vegetation.  SOLitude also knew the owner needed to continue to irrigate the turf and some ornamental plants around the pro shop and choosing the right herbicide was imperative. The pond today is free of weeds and algae and the irrigation intake has required no maintenance to date and the treatments never interfered with the irrigation schedule.

Irrigation_Pond_Raleigh_NC_0.60_acres_BEFORE_aquatic_weed_treatments Irrigation_Pond_Raleigh_NC_0.60_acres_AFTER_aquatic_weed_treatments

Water Chestnut Controlled with Clearcast & Renovate Max G

Fairfax, Virginia
1.0 Acre

This County Government has multiple ponds on their property. Only one of the ponds is maintained through a SOLitude annual management plan, but two other ponds, which sit in a forested area with a nice walking path around them, recently became an issue for the county. Unfortunately, both ponds in the forested area were completely infested with Water Chestnut in 2013. The upper pond had about 60 percent coverage and the lower (the one highlighted in this case study) had 100 percent coverage.  

Since we did not receive the contracts until August 2013, it was decided to use a foliar systemic herbicide considering the growth cycle of the plants. Four treatments were completed every 2 weeks, with Clearcast/MSO between August and September 2013. The following June, the pond had about 20 percent coverage. In July of 2014, treatment was followed up with a Renovate Max G treatment to completely control the Water Chestnut before going to seed. The proposed budget was met and our contact was very pleased with the results. Field staff received compliments from visitors who were once again enjoying the healthy pond on their waking path.

Municipal_Pond_Fairfax_VA_1.0_acre_BEFORE_water_chestnut_treatments Municipal_Pond_Fairfax_VA_1.0_acre_AFTER_water_chestnut_treatments_1

The Perfect Pond in a Pinch With Sonar Genesis

Purcellville, Virginia
1.50 Acres

In early August, SOLitude was hired to perform the treatment on a pond was 100 percent covered with a combination of watermeal, filamentous algae, and brittle naiad. The client requested that his pond be clear of vegetation in time for his annual Labor Day Picnic on September 2. However, the extensive coverage by vegetation and the lack of aeration made the use of a fast-acting herbicide too risky due to dissolved oxygen concerns, and a slow-acting systemic was selected. The pond was treated on August 12 with Sonar Genesis and was rechecked on August 24. There was already a remarkable improvement in the appearance of the pond. The watermeal was mostly bleached and the coverage was reduced, and the brittle naiad had dropped down from the surface and exhibited extensive chlorosis.

We followed up with a bump application of the same systemic herbicide on August 29. By the time of the party on September 2, the brittle naiad was not visible from the surface and the watermeal coverage was less than 10 percent. The pond was completely clear of the vegetation by September 17 and was “picture perfect.” The client was very happy with the results, but promised to let us treat earlier in 2014!

Private_Pond_Purcellville_VA_1.50_acres_BEFORE_watermeal_algae_brittle_naiad_treatments_1-1 Private_Pond_Purcellville_VA_1.50_acres_AFTER_watermeal_algae_brittle_naiad_treatments

Filamentous Algae: Quick To Come and Quick To Go With Captain XTR

Ashburn, Virginia
0.25 Acres

This condominium complex in Ashburn, VA sits next to a very large lake, but we only manage two small coves in the community off of the main lake. Each cove has a recirculating pump which fills a .25 acre upper pond with an average depth of 4 feet. The County had to drop the level of the main lake, which resulted in the pumps not being able to fill the ponds. The low water level, lack of flow, and hot temperatures yielded 100 percent filamentous algae coverage very quickly.

We treated with Captain XTR using a backpack sprayer and within two weeks, the water level of the main lake was back to normal and the pond had absolutely no sign of algae. The manager of the site could not be happier with the results and the residents of the community were impressed as well.

Community_Stormwater_Pond_Ashburn_VA_0.25_acres_BEFORE_Filamentous_algae_treatments_b Community_Stormwater_Pond_Ashburn_VA_0.25_acres_AFTER_Filamentous_algae_treatments_b

Captain XTR Controls Algae on a Historically Problematic Pond

Charlotte, North Carolina
1.50 Acres

This community pond was covered in approximately 60 to 70 percent thick floating pithophora algal mats. Split applications using Captain XTR and a contact herbicide were prescribed to bring down the algae slowly to prevent the dissolved oxygen (DO) from crashing and causing a fish kill. SOLitude was able to gain control of the algae in three treatments as prescribed. The community has since added a Vertex submersed aeration system in combination with their existing AquaMaster 5 hp fountain to help aerate the pond. The historically problematic pond is now balanced and once again a focal point of the community.

Community_Pond_Charlotte_NC_1.5_acres_BEFORE_algae_treatments_b Community_Pond_Charlotte_NC_1.5_acres_AFTER_algae_treatments

Captain XTR to the Rescue for Memorial Day Festivities

Fort Belvoir, Virginia
0.45 Acres

This retirement community in Lorton, VA, was hosting an event for Memorial Day to honor the retired military residents there. A portion of the event was to be held under the American flag next to the pond. Not only would residents and their families be attending, but also well-respected military and government officials.

This .45 surface acre pond has a 4 foot average depth and very shallow areas around the edges making it highly susceptible to thick algae growth. The pond was about 50 percent covered in filamentous algae with just a week before their event. We treated with a backpack sprayer using Captain XTR to control the algae. To gain more long term control with the second treatment, SeClear and enzymes were used. By the time the event happened on Memorial Day, the pond looked great and the community manager and residents were extremely pleased.

Retirement_community_pond_Fort_Belvoir__Virginia_0.45_acres_BEFORE_algae_treatments Retirement_community_pond_Fort_Belvoir__Virginia_0.45_acres_AFTER_algae_treatments

SeClear Conquers Golf Course Algae Invasion

New Kent, Virginia
6.50 Acres

The irrigation pond located within this golf course property was 60 percent covered in filamentous algae when the SOLitude team was called in to take action. The water was tested and the proper prescription was determined. SePRO's SeClear was applied by boat using a low volume sprayer in late March and again two weeks later in April. Over the course of two treatments, the entire algae bloom died and did not return for the remainder of the season. The customer was extremely happy with the results and so were the golfers!

Golf_course_Irrigation_Pond_New_Kent_VA_6.50_acres_BEFORE_Filamentous_algae_treatments Golf_course_Irrigation_Pond_New_Kent_VA_6.50_acres_AFTER_Filamentous_algae_treatments

Low Impact Environmental Herbicide Sonar Q Prevails

Free Union, Virginia
6.00 Acres

This 1,500 acre agricultural property was primarily used for grazing horses and hay production and included a large lake used for recreational swimming and fishing. The lake was overtaken by aquatic weeds known as watershield, so the recreational use became limited. The property owners were interested in implementing a harvesting program for the watershield to avoid the use of pesticides; however, the large number of downed trees and subsurface rocks made that option unfeasible. They agreed to consider the application of herbicides if it could be demonstrated that the product used would be environmentally safe and economically sustainable. The client was very impressed with the extensive information available on the safety profile of Sonar Q.

Sonar Q was applied in mid-May (later in the season than preferred) and a follow-up application was performed in early June. In late July, things began to turn in our favor and many more of the plants began to drop, and the remaining plants looked severely injured. At our final visit in early August, there was not a single watershield plant visible in the lake. The treatment took almost four months, because of the late start date, but the Sonar prevailed in the end. We also were able to stay under budget on the project, and the client was extremely satisfied.

Agricultural_Private_Pond_Free_Union_VA_6.00_acres_BEFORE_water_shield_treatments Agricultural_Private_Pond_Free_Union_VA_6.00_acres_AFTER_water_shield_treatments

A Phoslock Solution for Pond Pollution

Loudoun County, Virginia
1.00 Acre

This stormwater management facility was continually plagued by several algae blooms. It is at the lower end of the community and receives drainage from numerous roads and several acres of high-density residential development. In spite of frequent and high rate treatments with a variety of algaecides, the pond is never completely clear of filamentous algae during the summer months, and we periodically have to do phased treatments because of heavy coverage.

The pre-treatment analysis showed that the dominant algae species in the pond was Spirogyra, and the total phosphorus (TP) level was "high" at 45.8 ppb, which characterizes the pond as eutrophic. In order to mitigate some of the phosphorus, a trial with a new product, Phoslock, was used in conjunction with the herbicide program already in progress, helping to greatly improve the health of the pond. Due to the heavy rainstorms this season, we continued to battle the algae with algaecides; however, our quantity of algaecide applied and total application time was dramatically less than in previous years.

We will continue to incorporate Phoslock into the treatment strategy moving forward!

Community_Stormwater_Pond_Loudoun_County_VA_1.0_acre_BEFORE_algae_treatments Community_Stormwater_Pond_Loudoun_County_VA_1.0_acre_AFTER_algae_treatments

Captain XTR Prevails In One Treatment

Suffolk, Virginia
1.60 Acres

SOLitude Lake Management started maintaining this farm's community stormwater ponds under an annual management contract in late April. The larger of the two ponds had been taken over by filamentous algae and was an ecological issue as well as an eyesore to the community. The residents within the community were eager to see the pond clear again and our goal was to achieve algae control within a few treatments.

We decided to treat the pond with Captain XTR in a high volume sprayer for the initial treatment and perform a follow up treatment approximately two weeks later. It is worth noting that this pond experiences little flow, except during periods of heavy rain, so we were confident the product would not flush out. The property was checked again in early May. At this time, the pond was clear of any filamentous algae, so the budgeted follow up treatment was not required.

SOLitude was able to achieve excellent control using Captain XTR; only one treatment was needed and the project came in well under budget.

Farm_Pond_Suffolk_VA_1.6_acres_BEFORE_filamentous_algae_treatment Farm_Pond_Suffolk_VA_1.6_acres_AFTER_filamentous_algae_treatment

Sonar Genesis  Allows For Healthy Irrigation Usage

Prince William County, Virginia
0.60 Acres

This new client recently purchased property in Prince William County and wanted to restore the health and beauty of the existing pond on the property, as it was 75 percent covered with watermeal. It also had minor growth of algae and slender pondweed. The client planned to irrigate from the pond in the future.

The SOLitude Lake Management team added a ½ HP fountain and treated the pond and all plants with Sonar Genesis, through a tank sprayer on April 15. On May 1, testing showed the watermeal was reduced to 10 percent coverage and the slender pondweed resolved completely.

Unfortunately, May was a very rainy month, and the watermeal began to recover rapidly. We followed up with another application of Sonar Genesis on June 15 and continued to monitor the pond. The plants continued to become chlorotic and the coverage was gradually reduced until the pond was clear of vegetation by mid-July. After a few treatments the owners could finally use the pond as they intended.  

Private_Pond_Prince_William_County_VA_0.60_acres_BEFORE_watermeal_algae_pondweed_treatments-1 Private_Pond_Prince_William_County_VA_0.60_acres_AFTER_watermeal_algae_pondweed_treatments

Successful Biological Control Using Triploid Grass Carp

Caroline County, Virginia
273.00 Acres

The lake in this residential community was 40 percent covered in topped out hydrilla. Boaters struggled to access the lake and the plants were holding their boats and docks hostage. The community was faced with a difficult challenge: to treat with herbicides or to use a biological control method.

Based on the size of the lake and the large expense associated with proper herbicide treatments, the community decided on the natural, more cost effective approach. The community had concerns surrounding the use of triploid grass carp. They wanted to gain sufficient control of the hydrilla in a reasonable amount of time without eradicating all of the lake's aquatic vegetation and also did not want to have a negative impact on the fishery or promote the growth of undesired blue-green algae – all adverse effects of stocking the improper number of grass carp. In attempt to not eradicate the vegetation immediately we determined the bio-volume of vegetation within the lake using advanced sonar mapping technology. Once the acreage and bio-volume of hydrilla was determined, the proper grass carp population needed to control the hydrilla without immediately eradicating it was calculated.

The bio-volume data was collected in late August and the grass carp were stocked the following spring. The hydrilla was controlled the first summer following the carp's introduction. The hydrilla no longer hindered recreational activities and the small amount of hydrilla present did not reach more than 18 inches in length. The stocking strategy worked very well in the first year, suppressing the hydrilla growth without eradicating it and the use of proper numbers of grass carp continued to show major improvements with the lake.

Residential_Lake_Caroline_County_VA_273_acres_BEFORE_hydrilla_treatments-1 Residential_Lake_Caroline_County_VA_273_acres_AFTER_hydrilla_treatments-1

Assisted Living Enjoyment To the Max

Silver Spring, Maryland
0.75 Acres

The pond is used primarily for stormwater management, but it is in a high visibility location at the entrance of an assisted living facility, and the residents were very upset about the appearance of the waterbody. When we first evaluated the pond in August 2011, it was more than 75% covered with creeping willow primrose, and also had hydrilla in the open water areas. They requested a treatment strategy that would be fairly quick so the residents could see an improvement before the end of the season.

We first treated with SePRO's Renovate OTF and Sculpin G. It immediately helped with the primrose, however, significant growth of duckweed and algae had begun in the open areas, and the hydrilla still required treatment. We applied a tank mix of Nautique, diquat dibromide, Cide-Kick and water with a low-volume tank sprayer.

At our 1-month post-treatment check, the hydrilla, algae and duckweed were resolved. The primrose was mostly dead, but there were some plants in the far end of the pond that did not appear to be affected by the treatment; we applied Renovate MaxG and Sculpin G. At our 8-week post-treatment check, all of the plants were completely dead, with only dead tissue remaining above the water surface in the process of decomposing. The residents were back to enjoying their pond in the autumn months.

Assisted_Living_Pond_Silver_Spring_MD_0.75_acres_BEFORE_hydrilla_algae_duckweed_treatments-1 Assisted_Living_Pond_Silver_Spring_MD_0.75_acres_AFTER_hydrilla_algae_duckweed_treatments-1

Captain XTR and Phoslock, A Great Team For This Difficult Pond

Clear Brook, Virginia
0.90 Acres

This specific pond has been one of the most challenging waterbodies that we have encountered. The nuisance vegetation species are so unique, prevalent and persistent. The target species include curly leaf pondweed, hydrilla, duckweed and various types of mat-forming filamentous algae.  There is also a very strange pink "slime" that appears during the summer, as well as expansive submersed and floating mats of liverwort.

The land use in the watershed is primarily agricultural and rural residential. The owners use the pond for occasional recreational fishing (catch and release), and for irrigation of a large vegetable garden. The owners are less concerned with the submersed vegetation when it does not impact their fishing, but prefer that the surface of the pond remains clear.

Water quality testing results in early June showed high nutrient levels and classification of the pond as hypereutrophic. The algaecide rate and exposure testing found Captain XTR to be the most effective product. For nutrient management, it was recommended that we apply Phoslock for the Recovery Solution and the Reset Solution.

In mid-June, we performed an initial treatment with Captain XTR, followed one week later by the application of Phoslock. The results have been dramatic. While we have still had to treat the pond for algae during every maintenance visit, we are able to control the mats before they reach the surface. The pond has looked consistently better, which has made our client very happy!

Private_Pond_Clear_Brook_VA_0.90_acres_BEFORE_various_treatments-1 Private_Pond_Clear_Brook_VA_0.90_acres_AFTER_various_treatments-1

Bathymetric Mapping Helps HOA Plan Their Future

Henrico County, Virginia
7.40 Acres

Barrington case study mapIn the summer of 2010, SOLitude Lake Management completed a bathymetric study of a homeowners association lake to help the residents assess the overall condition of their lake, identify areas of significant sedimentation, plan for dredging and overall future maintenance.

Combined with our professional inspection of the lake and report, bathymetric mapping is a powerful tool for residential communities in their long-term planning and budgeting process.

Engineers Select Local Bathymetric Lake Mapping Expert

Charlotte County, Virginia
36.70 Acres

Keysville 3D1In the spring of 2010, SOLitude Lake Management provided a bathymetric lake mapping for a manmade lake in Virginia. Engineers recently performed a flood study on the dam and found the spillway insufficient. While preparing an engineering report to propose upgrade options, the only bathymetric data available was hand collected in the 1950s.

As a local expert on bathymetric mapping, SOLitude Lake Management was able to conduct an accurate, up-to-date lake depth map for the engineer's report. This will provide the precise lake depths needed to create the best dam upgrade options. In addition, the data will assist engineers in determining the amount of volume reduction achieved if the decision is made to lower the lake level a few feet.

Chincoteague National Wildlife

Accomack County, Virginia
190.50 Acres

Phragmites2010In 2009, SOLitude Lake Management was contracted by the U.S. Fish and Wildlife Service to aid in the eradication of Phragmites australis on Chincoteague National Wildlife Refuge. SOLitude was brought in to treat areas of the refuge that were unable to be treated with aerial applications.

Using an amphibious vehicle, the applicators were able to travel throughout the refuge, through the marshes, mud flats, beaches and forests with relative ease. Using this vehicle, SOLitude was able to seek out and treat plots of Phragmites that were otherwise difficult to reach. Each of the plots of Phragmites were mapped using GPS technology and the U.S. Fish and Wildlife Service was provided with maps from our partner, The Mapping Network. These maps allowed the customer to quantify the areas that were treated and provide a reference point for future applications.

In 2010, SOLitude returned to Chincoteague to follow up on the previous year's treatment. The applicators found that a large majority of the Phragmites did not return. Phragmites australis is a very hearty plant and often takes years to eradicate from an area. Using the proper tools will help eliminate this plant and restore this valuable asset. This will be an ongoing effort for the U.S. Fish and Wildlife Service and SOLitude Lake Management will be there to help along the way.

Fisherman's Island National Wildlife Refuge

Northampton County, Virginia
30.00 Acres

Fishermans IslandSOLitude Lake Management is a certified aquatic pesticide applicator in Virginia, Maryland, North Carolina, West Virginia, Delaware and Pennsylvania. As such, SOLitude was contracted by the U.S. Fish and Wildlife Service, in a partnership with helicopter applicators, to provide the ground application resources required to treat the areas of Phragmites growth that was not able to be treated through aerial applications.

As a certified mapping partner of The Mapping Network, SOLitude Lake Management used GPS lake mapping technologies to document and provide detailed maps and aerial photography of the areas in which the Phragmites were treated. Not only did this allow the customer to quantify the acreage of areas treated and evaluate the costs of the project, it also allowed them to track the progress of the program as compared to previous years.

This was the second year that SOLitude Lake Management was involved in this project, and progress can already be seen. The density of the Phragmites after the first year's treatment has been decreased, and much of the natural vegetation has started to recover and return to the areas that were once dominated by Phragmites. Phragmites is known for its durability and extremely aggressive patterns of growth so this will be an ongoing effort that will likely take many years. However, with the right treatment, and the proper tools and use of GPS technology and aerial imagery, we are able to make great strides towards our goals of eradication of the Phragmites and the restoration of this beautiful natural habitat.

Magothy Bay Natural Area Preserve

Northampton County, Virginia
5.60 Acres

Magothy BayMagothy Bay Natural Area Preserve has salt marshes, forested wetlands and woodland areas. These features make this natural area unique to the Eastern Shore of Virginia and provide habitat for a variety of birds and other animals. The invasive features of Phragmites often destroy the habitat of the animals in the area. Virginia Department of Conservation and Recreation contracted SOLitude Lake Management to help in their ongoing attempt to preserve the area in its natural state. SOLitude used an eight-wheel amphibious vehicle to access marsh and upland areas to treat approximately six acres of Phragmites with herbicide. This allowed for more effective treatment and will result in long-term success in the overall treatment of the Phragmites on Magothy Bay.

Mutton Hunk Fen Natural Area Preserve

Accomack County, Virginia
3.00 Acres

MuttonHunkAerialMutton Hunk Fen Preserve is located in Accomack County in the Upper Eastern Shore of Virginia. This waterfront is not far from the Atlantic Ocean. Mutton Hunk is low-lying and has some rare fauna on site which is one of the main reasons the state set aside this area to be a natural preserve. Like many of the shoreline properties in this area, it has become overtaken with Phragmites australis.

SOLitude Lake Management worked with officials from Virginia Department of Conservation and Recreation and Department of Environmental Quality to successful treat Phragmites plants throughout the site. Staff from SOLitude treated all the marked Phragmites locations on site and provided detailed GPS maps for the departments for each treated location. The treatment combined with mapping will allow for the clients to see what areas may be of any concern for the coming seasons.

Nature Conservancy

Northampton County, Virginia
1.60 Acres

Oyster VA PreserveNature Conservancy tries to be proactive in assuring that any invasive species remain out of the reserves they set aside. The conservancy sets aside these areas and leaves them untouched, allowing for natural plants and animals to flourish. At the Oyster, VA preserve located in Northampton County, Phragmites australis began to invade and the Nature Conservancy contracted SOLitude Lake Management to treat the plants.

1.6 acres were treated and the client was provided with GPS maps from field collected data. Argo eight-wheel amphibious vehicle and backpack sprayers were used to treat the Phragmites with herbicide and provide the conservancy with the treatment plan and success they desired.

Guide To Sustainable Pond Algaes & Aquatic Weed Control
How To Restore Lake And Pond Water Quality Through Nutrient Management

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In support of our belief that lakes and ponds are a precious natural resource requiring protection, SOLitude is committed to providing sustainable and renewable solutions that maintain ecological balance in the workplace and beyond.


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When you partner with SOLitude, a dedicated field technician visits your lake or pond twice a month, leveraging extensive knowledge and training to carefully maintain ecological balance and preserve the appearance of your aquatic property.




Utilizing the latest GPS aquatic mapping technology and our own proprietary lake and pond management software, the experts at SOLitude collect all the data necessary to provide comprehensive analysis and in-depth solutions.