TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

Appendix A-8: FDEP’s Benchmark Lake Summaries 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-1 

Nutrient Benchmark Site Summary 

Lake Cassidy 

STORET Station 32030104 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.00 and a watershed LDI score of 2.06, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, with small areas of pasture and residential land use observed 

beyond an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Lake Cassidy (Station 32020104) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-2 

Photographs of Lake Cassidy 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 134 

100m Buffer LDI 1.00 

Watershed LDI 2.06 

LVI Score 88.6 

Total Phosphorus Geometric Mean (mg/L) 0.004 

Total Nitrogen Geometric Mean (mg/L) 0.231 

Chlorophyll-a Geometric Mean (ųg/L) 0.661 

Geometric Mean Color (PCU) 10.3 

The habitat assessment scored in the high end of the “Optimal” range. The Lake Vegetation Index scored in 

Category I, indicating an unusually diverse assemblage of sensitive aquatic vegetation, fully supporting the Class 

III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Lake Cassidy. Based on our analyses, the Department concluded that the 

site was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy 

biological assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, 

they are associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-3 

Nutrient Benchmark Site Summary 

Pate Lake 

STORET Station 32020094 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.86 and a watershed LDI score of 2.02, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, with small areas of pasture and residential land use observed 

beyond an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Pate Lake (Station 32020094) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-4 

Photographs of Pate Lake 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 119 

100m Buffer LDI 1.86 

Watershed LDI 2.02 

LVI Score 87.0 

Total Phosphorus Geometric Mean (mg/L) 0.008 

Total Nitrogen Geometric Mean (mg/L) 0.252 

Chlorophyll-a Geometric Mean (ųg/L) 0.871 

Geometric Mean Color (PCU) 19.3 

The habitat assessment scored in the high end of the “Optimal” range. The Lake Vegetation Index scored in 

Category I, indicating an unusually diverse assemblage of sensitive aquatic vegetation, fully supporting the Class 

III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Pate Lake. Based on our analyses, the Department concluded that the site 

was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy biological 

assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, they are 

associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-5 

Nutrient Benchmark Site Summary 

Lake Iammonia East 

STORET Station 22020055 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.59 and a watershed LDI score of 2.29, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, with small areas of silviculture and residential land use 

observed beyond an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Lake Iammonia East (Station 22020055) showing watershed vicinity and land 

use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-6 

 

Photographs of Lake Iammonia East 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 111 

100m Buffer LDI 1.59 

Watershed LDI 2.29 

LVI Score 64.8 

Total Phosphorus Geometric Mean (mg/L) 0.019 

Total Nitrogen Geometric Mean (mg/L) 0.843 

Chlorophyll-a Geometric Mean (ųg/L) 1.437 

Geometric Mean Color (PCU) 48.3 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category II, indicating 

a diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Lake Iammonia East. Based on our analyses, the Department concluded 

that the site was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy 

biological assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, 

they are associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-7 

Nutrient Benchmark Site Summary 

Lake Miccousukee 

STORET Station 22030054 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.36 and a watershed LDI score of 2.06, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, with areas of silviculture and residential land use observed 

beyond an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Lake Miccousukee (Station 22020054) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-8 

 

Photographs of Lake Miccousukee 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 123 

100m Buffer LDI 1.36 

Watershed LDI 2.06 

LVI Score 80.1 

Total Phosphorus Geometric Mean (mg/L) 0.018 

Total Nitrogen Geometric Mean (mg/L) 0.751 

Chlorophyll-a Geometric Mean (ųg/L) 1.169 

Geometric Mean Color (PCU) 66.4 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category I, indicating 

an unusually diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Lake Miccousukee. Based on our analyses, the Department concluded 

that the site was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy 

biological assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, 

they are associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-9 

Nutrient Benchmark Site Summary 

Turkey Pen Pond 

STORET Station 26753 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.54 and a watershed LDI score of 1.98, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, with areas of silviculture and pasture land use observed 

beyond an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Turkey Pen Pond (Station 26753) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-10 

 

Photographs of Turkey Pen Pond 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 131 

100m Buffer LDI 1.54 

Watershed LDI 1.98 

LVI Score 75.2 

Total Phosphorus Geometric Mean (mg/L) 0.003 

Total Nitrogen Geometric Mean (mg/L) 0.178 

Chlorophyll-a Geometric Mean (ųg/L) 0.505 

Geometric Mean Color (PCU) 17.3 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category II, indicating 

a diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Turkey Pen Pond. Based on our analyses, the Department concluded that 

the site was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy 

biological assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, 

they are associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-11 

Nutrient Benchmark Site Summary 

Lake Dunford 

STORET Station 32010045 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.69 and a watershed LDI score of 2.00, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, with areas of residential and pasture land use observed 

beyond an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Lake Dunford (Station 32010045) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-12 

 

Photographs of Lake Dunford 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 120 

100m Buffer LDI 1.69 

Watershed LDI 2.00 

LVI Score 86.2 

Total Phosphorus Geometric Mean (mg/L) 0.003 

Total Nitrogen Geometric Mean (mg/L) 0.479 

Chlorophyll-a Geometric Mean (ųg/L) 0.982 

Geometric Mean Color (PCU) 25.7 

The habitat assessment scored in upper end of the “Optimal” range. The Lake Vegetation Index scored in the 

Category I, indicating an unusually diverse assemblage of sensitive aquatic vegetation, fully supporting the Class 

III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Lake Dunford. Based on our analyses, the Department concluded that the 

site was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy 

biological assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, 

they are associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-13 

Nutrient Benchmark Site Summary 

Rattlesnake Lake 

STORET Station 32030099 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.53 and a watershed LDI score of 1.68, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural with an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Rattlesnake Lake (Station 32030099) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-14 

 

Photographs of Rattlesnake Lake 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 124 

100m Buffer LDI 1.53 

Watershed LDI 1.68 

LVI Score* 76.1 

Total Phosphorus Geometric Mean (mg/L) 0.004 

Total Nitrogen Geometric Mean (mg/L) 0.162 

Chlorophyll-a Geometric Mean (ųg/L) 0.698 

Geometric Mean Color (PCU) 7.1 

*LVI Score is the average of the two most recent assessments. 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category II, indicating 

a diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Rattlesnake Lake. Based on our analyses, the Department concluded that 

the site was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy 

biological assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, 

they are associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-15 

Nutrient Benchmark Site Summary 

Merial Lake 

STORET Station 14441 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.48 and a watershed LDI score of 1.83, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural with some residential uses and an extensive forested riparian 

buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Merial Lake (Station 14441) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-16 

 

Photographs of Merial Lake 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 119 

100m Buffer LDI 1.48 

Watershed LDI 1.83 

LVI Score* 80.1 

Total Phosphorus Geometric Mean (mg/L) 0.004 

Total Nitrogen Geometric Mean (mg/L) 0.102 

Chlorophyll-a Geometric Mean (ųg/L) 0.773 

Geometric Mean Color (PCU) 4.7 

*LVI Score is the average of the two most recent assessments. 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category I, indicating 

an unusually diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Merial Lake. Based on our analyses, the Department concluded that the 

site was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy 

biological assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, 

they are associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-17 

Nutrient Benchmark Site Summary 

Otter Lake 

STORET Station 22020090 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.36 and a watershed LDI score of 1.37, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural with an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Otter Lake (Station 22020090) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-18 

 

Photographs of Otter Lake 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 121 

100m Buffer LDI 1.36 

Watershed LDI 1.37 

LVI Score* 71.3 

Total Phosphorus Geometric Mean (mg/L) 0.020 

Total Nitrogen Geometric Mean (mg/L) 0.718 

Chlorophyll-a Geometric Mean (ųg/L) 1.070 

Geometric Mean Color (PCU) 186.9 

*LVI Score is the average of the two most recent assessments. 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category II, indicating 

a diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Otter Lake. Based on our analyses, the Department concluded that the site 

was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy biological 

assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, they are 

associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-19 

Nutrient Benchmark Site Summary 

Gore Lake 

STORET Station 20030339 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.76 and a watershed LDI score of 2.18, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, with small areas of pasture and residential land use observed 

beyond an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Gore Lake (Station 20030339) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-20 

 

Photographs of Gore Lake 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 114 

100m Buffer LDI 1.76 

Watershed LDI 2.18 

LVI Score* 64.0 

Total Phosphorus Geometric Mean (mg/L) 0.010 

Total Nitrogen Geometric Mean (mg/L) 0.522 

Chlorophyll-a Geometric Mean (ųg/L) 0.832 

Geometric Mean Color (PCU) 163.7 

*LVI Score is the average of the two most recent assessments. 

The habitat assessment scored in the high end of the “Optimal” range. The Lake Vegetation Index scored in 

Category II, indicating a diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III 

designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Gore Lake. Based on our analyses, the Department concluded that the site 

was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy biological 

assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, they are 

associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-21 

Nutrient Benchmark Site Summary 

Lake Ashby 

STORET Station 20010492 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.56 and a watershed LDI score of 2.04, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, with small areas of pasture and residential land use observed 

beyond an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Lake Ashby (Station 20010492) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-22 

Photograph of Lake Ashby 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 112 

100m Buffer LDI 1.56 

Watershed LDI 2.04 

LVI Score* 43.6 

Total Phosphorus Geometric Mean (mg/L) 0.076 

Total Nitrogen Geometric Mean (mg/L) 0.819 

Chlorophyll-a Geometric Mean (ųg/L) 1.389 

Geometric Mean Color (PCU) 121.3 

*LVI Score is the average of the two most recent assessments. 

The habitat assessment scored in the high end of the “Optimal” range. The Lake Vegetation Index scored in 

Category III, indicating a lack of sensitive aquatic vegetation, which does not fully supporting the Class III 

designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Lake Ashby. Based on our analyses, the Department concluded that the 

site was influenced only by very low levels of anthropogenic stressors; however, it does not currently maintain a 

healthy biological assemblage of aquatic macrophytes. Thus, while the nutrient concentrations are reflective of 

minimally disturbed conditions, there are other stressors that preventing the site from fully supporting its most 

sensitive designated use (propagation and maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-23 

Nutrient Benchmark Site Summary 

Lake Harney 

STORET Station 20010026/ 20010376/ 20010378 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.72 and a watershed LDI score of 1.93, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, with small areas of pasture and residential land use observed 

beyond an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Lake Harney (Station 20010026/ 20010376/ 20010378) showing watershed 

vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-24 

 

Photographs of Lake Harney 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 122 

100m Buffer LDI 1.72 

Watershed LDI 1.93 

LVI Score* 51.8 

Total Phosphorus Geometric Mean (mg/L) 0.074 

Total Nitrogen Geometric Mean (mg/L) 1.366 

Chlorophyll-a Geometric Mean (ųg/L) 3.101 

Geometric Mean Color (PCU) 139.5 

*LVI Score is the average of the two most recent assessments. 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category II, indicating 

a diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Lake Harney. Based on our analyses, the Department concluded that the 

site was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy 

biological assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, 

they are associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-25 

Nutrient Benchmark Site Summary 

Fox Lake 

STORET Station 20010865 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.93 and a watershed LDI score of 1.58, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, with small areas of pasture and residential land use observed 

beyond an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Fox Lake (Station 20010865) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-26 

 

Photographs of Fox Lake 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 118 

100m Buffer LDI 1.93 

Watershed LDI 1.58 

LVI Score 48.0 

Total Phosphorus Geometric Mean (mg/L) 0.042 

Total Nitrogen Geometric Mean (mg/L) 1.640 

Chlorophyll-a Geometric Mean (ųg/L) 6.120 

Geometric Mean Color (PCU) 93.8 

The habitat assessment scored in the high end of the “Optimal” range. The Lake Vegetation Index scored in 

Category II, indicating a diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III 

designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Fox Lake. Based on our analyses, the Department concluded that the site 

was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy biological 

assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, they are 

associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-27 

Nutrient Benchmark Site Summary 

Blue Cypress Lake 

STORET Station 20010099 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.23 and a watershed LDI score of 1.04, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, with small areas of pasture and residential land use observed 

beyond an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Blue Cypress Lake (Station 20010099) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-28 

 

Photographs of Blue Cypress Lake 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 120 

100m Buffer LDI 1.23 

Watershed LDI 1.04 

LVI Score* 59.5 

Total Phosphorus Geometric Mean (mg/L) 0.113 

Total Nitrogen Geometric Mean (mg/L) 1.397 

Chlorophyll-a Geometric Mean (ųg/L) 2.826 

Geometric Mean Color (PCU) 211.1 

*LVI Score is the average of the two most recent assessments. 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category II, indicating 

a diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Blue Cypress Lake. Based on our analyses, the Department concluded 

that the site was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy 

biological assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, 

they are associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-29 

Nutrient Benchmark Site Summary 

Lake Annie 

STORET Station 26011159 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.77 and a watershed LDI score of 2.89, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, with small areas of pasture and residential land use observed 

beyond an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Lake Annie (Station 26011159) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-30 

 

Photographs of Lake Annie 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 136 

100m Buffer LDI 1.77 

Watershed LDI 2.89 

LVI Score* 85.3 

Total Phosphorus Geometric Mean (mg/L) 0.009 

Total Nitrogen Geometric Mean (mg/L) 0.461 

Chlorophyll-a Geometric Mean (ųg/L) 3.603 

Geometric Mean Color (PCU) 61.3 

*LVI Score is the average of the two most recent assessments. 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category I, indicating 

an unusually diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Lake Annie. Based on our analyses, the Department concluded that the 

site was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy 

biological assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, 

they are associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-31 

Nutrient Benchmark Site Summary 

Lake Russell 

STORET Station 26010239 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.11 and a watershed LDI score of 2.02, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, with small areas of pasture and residential land use observed 

beyond an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Lake Russell (Station 26010239) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-32 

Photographs of Lake Russell 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 120 

100m Buffer LDI 1.11 

Watershed LDI 2.02 

LVI Score* 71.5 

Total Phosphorus Geometric Mean (mg/L) 0.107 

Total Nitrogen Geometric Mean (mg/L) 1.775 

Chlorophyll-a Geometric Mean (ųg/L) 2.966 

Geometric Mean Color (PCU) 444.2 

*LVI Score is the average of the two most recent assessments. 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category II, indicating 

a diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Lake Russell. Based on our analyses, the Department concluded that the 

site was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy 

biological assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, 

they are associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-33 

Nutrient Benchmark Site Summary 

Low Lake 

STORET Station 21020065 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.53 and a watershed LDI score of 2.24, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, with small areas of pasture and residential land use observed 

beyond an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Low Lake (Station 21020065) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-34 

Photographs of Low Lake 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 113 

100m Buffer LDI 1.53 

Watershed LDI 2.24 

LVI Score 66.4 

Total Phosphorus Geometric Mean (mg/L) 0.095 

Total Nitrogen Geometric Mean (mg/L) 0.966 

Chlorophyll-a Geometric Mean (ųg/L) 16.730 

Geometric Mean Color (PCU) 180.0 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category II, indicating 

a diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Low Lake. Based on our analyses, the Department concluded that the site 

was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy biological 

assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, they are 

associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-35 

Nutrient Benchmark Site Summary 

Swift Creek Pond 

STORET Station 21030066 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.02 and a watershed LDI score of 1.47, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, with small areas of pasture and residential land use observed 

beyond an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Swift Creek Pond (Station 21030066) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-36 

Photographs of Swift Creek Pond 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 116 

100m Buffer LDI 1.02 

Watershed LDI 1.47 

LVI Score* 78.8 

Total Phosphorus Geometric Mean (mg/L) 0.055 

Total Nitrogen Geometric Mean (mg/L) 1.452 

Chlorophyll-a Geometric Mean (ųg/L) 5.641 

Geometric Mean Color (PCU) 296.3 

*LVI Score is the average of the two most recent assessments. 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category I, indicating 

an unusually diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Swift Creek Pond. Based on our analyses, the Department concluded that 

the site was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy 

biological assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, 

they are associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-37 

Nutrient Benchmark Site Summary 

Lake Palestine 

STORET Station 19010044 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.03 and a watershed LDI score of 1.44, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, with small areas of pasture and residential land use observed 

beyond an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Lake Palestine (Station 19010044) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-38 

Photographs of Lake Palestine 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 126 

100m Buffer LDI 1.03 

Watershed LDI 1.44 

LVI Score* 92.5 

Total Phosphorus Geometric Mean (mg/L) 0.019 

Total Nitrogen Geometric Mean (mg/L) 0.714 

Chlorophyll-a Geometric Mean (ųg/L) 2.680 

Geometric Mean Color (PCU) 44.9 

*LVI Score is the average of the two most recent assessments. 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category I, indicating 

an unusually diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Lake Palestine. Based on our analyses, the Department concluded that the 

site was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy 

biological assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, 

they are associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-39 

Nutrient Benchmark Site Summary 

Ocean Pond 

STORET Station 21010011 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.54 and a watershed LDI score of 1.19, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, with small areas of pasture and residential land use observed 

beyond an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Ocean Pond (Station 21010011) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-40 

Photographs of Ocean Pond 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 119 

100m Buffer LDI 1.54 

Watershed LDI 1.19 

LVI Score* 88.7 

Total Phosphorus Geometric Mean (mg/L) 0.037 

Total Nitrogen Geometric Mean (mg/L) 0.452 

Chlorophyll-a Geometric Mean (ųg/L) 2.419 

Geometric Mean Color (PCU) 25.2 

*LVI Score is the average of the two most recent assessments. 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category I, indicating 

an unusually diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Ocean Pond. Based on our analyses, the Department concluded that the 

site was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy 

biological assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, 

they are associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-41 

Nutrient Benchmark Site Summary 

Orange Lake 

STORET Station ALA306NL 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.70 and a watershed LDI score of 1.99, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, with small areas of pasture and residential land use observed 

beyond an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Orange Lake (Station ALA306NL) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-42 

Photographs of Orange Lake 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 113 

100m Buffer LDI 1.70 

Watershed LDI 1.99 

LVI Score 39.3 

Total Phosphorus Geometric Mean (mg/L) 0.130 

Total Nitrogen Geometric Mean (mg/L) 1.913 

Chlorophyll-a Geometric Mean (ųg/L) 20.997 

Geometric Mean Color (PCU) 122.7 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category III, 

indicating a lack of sensitive aquatic vegetation, which does not fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Orange Lake. Based on our analyses, the Department concluded that the 

site was influenced only by very low levels of anthropogenic stressors; however, it does not currently maintain a 

healthy biological assemblage of aquatic macrophytes. Thus, while the nutrient concentrations are reflective of 

minimally disturbed conditions, there are other stressors that preventing the site from fully supporting its most 

sensitive designated use (propagation and maintenance of a healthy, well-balanced population of fish and wildlife) 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-43 

Nutrient Benchmark Site Summary 

Lake Disston 

STORET Station 20030402 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.44 and a watershed LDI score of 1.69, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, with small areas of pasture and residential land use observed 

beyond an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Lake Disston (Station 20030402) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-44 

Photographs of Lake Disston 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 117 

100m Buffer LDI 1.44 

Watershed LDI 1.69 

LVI Score 72.6 

Total Phosphorus Geometric Mean (mg/L) 0.034 

Total Nitrogen Geometric Mean (mg/L) 1.138 

Chlorophyll-a Geometric Mean (ųg/L) 1.432 

Geometric Mean Color (PCU) 464.0 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category II, indicating 

a diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Lake Disston. Based on our analyses, the Department concluded that the 

site was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy 

biological assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, 

they are associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-45 

Nutrient Benchmark Site Summary 

Lake Eton 

STORET Station 20020393 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.42 and a watershed LDI score of 1.18, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, with small areas of pasture and residential land use observed 

beyond an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Lake Eton (Station 20020393) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-46 

Photographs of Lake Eton 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 119 

100m Buffer LDI 1.42 

Watershed LDI 1.18 

LVI Score 48.0 

Total Phosphorus Geometric Mean (mg/L) 0.069 

Total Nitrogen Geometric Mean (mg/L) 1.506 

Chlorophyll-a Geometric Mean (ųg/L) 1.036 

Geometric Mean Color (PCU) 501.0 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category II, indicating 

a diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Lake Eton. Based on our analyses, the Department concluded that the site 

was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy biological 

assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, they are 

associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-47 

Nutrient Benchmark Site Summary 

Lake Charles 

STORET Station 20020430 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.00 and a watershed LDI score of 1.69, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, with small areas of pasture and residential land use observed 

beyond an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Lake Charles (Station 20020430) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-48 

Photographs of Lake Charles 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 116 

100m Buffer LDI 1.00 

Watershed LDI 1.69 

LVI Score 76.3 

Total Phosphorus Geometric Mean (mg/L) 0.093 

Total Nitrogen Geometric Mean (mg/L) 1.840 

Chlorophyll-a Geometric Mean (ųg/L) 0.786 

Geometric Mean Color (PCU) 457.9 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category II, indicating 

a diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Lake Charles. Based on our analyses, the Department concluded that the 

site was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy 

biological assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, 

they are associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-49 

Nutrient Benchmark Site Summary 

Redwater Lake 

STORET Station 20020460 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.01 and a watershed LDI score of 1.69, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, with small areas of pasture and residential land use observed 

beyond an extensive forested riparian buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Redwater Lake (Station 20020460) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-50 

 

Photographs of Redwater Lake 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 116 

100m Buffer LDI 1.01 

Watershed LDI 1.69 

LVI Score 72.3 

Total Phosphorus Geometric Mean (mg/L) 0.122 

Total Nitrogen Geometric Mean (mg/L) 1.728 

Chlorophyll-a Geometric Mean (ųg/L) 0.758 

Geometric Mean Color (PCU) 414.9 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category II, indicating 

a diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Redwater Lake. Based on our analyses, the Department concluded that 

the site was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy 

biological assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, 

they are associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-51 

Nutrient Benchmark Site Summary 

Wildcat Lake 

STORET Station 20020504 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.31 and a watershed LDI score of 1.13, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, land use observed beyond an extensive forested riparian 

buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Wildcat Lake (Station 20020504) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-52 

Photographs of Wildcat Lake 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 123 

100m Buffer LDI 1.31 

Watershed LDI 1.13 

LVI Score* 91.2 

Total Phosphorus Geometric Mean (mg/L) 0.023 

Total Nitrogen Geometric Mean (mg/L) 0.390 

Chlorophyll-a Geometric Mean (ųg/L) 2.548 

Geometric Mean Color (PCU) 78.2 

*LVI Score is the average of the two most recent assessments. 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category I, indicating 

an unusually diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Wildcat Lake. Based on our analyses, the Department concluded that the 

site was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy 

biological assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, 

they are associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-53 

Nutrient Benchmark Site Summary 

Sellers Lake 

STORET Station 20020496 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.44 and a watershed LDI score of 1.23, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, land use observed beyond an extensive forested riparian 

buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Sellers Lake (Station 20020496) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-54 

 

Photographs of Sellers Lake 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 123 

100m Buffer LDI 1.44 

Watershed LDI 1.23 

LVI Score* 80.1 

Total Phosphorus Geometric Mean (mg/L) 0.007 

Total Nitrogen Geometric Mean (mg/L) 0.199 

Chlorophyll-a Geometric Mean (ųg/L) 1.230 

Geometric Mean Color (PCU) 10.9 

*LVI Score is the average of the two most recent assessments. 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category I, indicating 

an unusually diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Sellers Lake. Based on our analyses, the Department concluded that the 

site was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy 

biological assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, 

they are associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-55 

Nutrient Benchmark Site Summary 

Buck Lake 

STORET Station 20010080 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.37 and a watershed LDI score of 1.23, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, land use observed beyond an extensive forested riparian 

buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Buck Lake (Station 20010080) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-56 

Photographs of Buck Lake 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 127 

100m Buffer LDI 1.37 

Watershed LDI 1.23 

LVI Score 72.3 

Total Phosphorus Geometric Mean (mg/L) 0.010 

Total Nitrogen Geometric Mean (mg/L) 0.457 

Chlorophyll-a Geometric Mean (ųg/L) 2.285 

Geometric Mean Color (PCU) 30.3 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category II, indicating 

a diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Buck Lake. Based on our analyses, the Department concluded that the 

site was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy 

biological assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, 

they are associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife). 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-57 

Nutrient Benchmark Site Summary 

Lake Norris 

STORET Station 20010355 

Land Use 

This station was considered to be a candidate reference site based on a 100m buffer Landscape Development 

Intensity Index (LDI) score of 1.49 and a watershed LDI score of 2.53, suggesting benign human influences in the 

watershed. During the site visit, aerial photographs were examined and direct observations confirmed that the 

majority of the watershed land use was forest/natural, land use observed beyond an extensive forested riparian 

buffer zone. 

Image Removed Due to Copyright. 

DOQQ 2004 aerial photograph of Lake Norris (Station 20010355) showing watershed vicinity and land use. 
TSD for U.S. EPA’s Proposed Numeric Nutrient Criteria for FL Inland Surface Fresh Waters

A8-58 

 

Photographs of Lake Norris 

Habitat, Biological and Water Quality Data

Parameter Value 

Habitat Assessment 113 

100m Buffer LDI 1.49 

Watershed LDI 2.53 

LVI Score 68.0 

Total Phosphorus Geometric Mean (mg/L) 0.053 

Total Nitrogen Geometric Mean (mg/L) 1.557 

Chlorophyll-a Geometric Mean (ųg/L) 1.313 

Geometric Mean Color (PCU) 329.3 

*LVI Score is the average of the two most recent assessments. 

The habitat assessment scored in the “Optimal” range. The Lake Vegetation Index scored in Category II, indicating 

a diverse assemblage of sensitive aquatic vegetation, fully supporting the Class III designation. 

Overall Reference Site Conclusion: 

Experienced FDEP scientists conducted a series of observations and measurements (habitat assessment, hydrology, 

local land use, and aquatic vegetation) at Lake Norris. Based on our analyses, the Department concluded that the 

site was influenced only by very low levels of anthropogenic stressors and that it clearly maintained healthy 

biological assemblages. Thus, not only are the nutrient concentrations reflective of minimally disturbed conditions, 

they are associated with biota which demonstrate full support of the most sensitive designated use (propagation and 

maintenance of a healthy, well-balanced population of fish and wildlife).