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Assessment Data for the State of Illinois Year 2004
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State of Illinois websites: | No State 305(b) Water Quality Assessment Report is available. |
| State Water Quality Program |
Search for a Waterbody within Illinois
Total Assessed Waters for the State of Illinois
Description of this table| Size Of Water | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rivers, Streams, Creeks (Miles) | Lakes, Ponds, Reservoir (Acres) | Bays, Estuaries (Square Miles) | Coastal Shorelines (Miles) | Oceans, Near Coastal Waters (Square Miles) | Wetlands (Acres) | Great Lakes Shoreline (Miles) | Great Lakes Open Water (Square Miles) | Inland Lake Shoreline (Miles) | |
| Total Assessed Waters | 15,069.42 | 154,048.25 | .06 | .00 | .00 | .00 | 56.30 | 153.70 | .00 |
| Estimated Total Water Size in IL | 87,110.00 | 309,340.00 | Unavailable | Unavailable | Unavailable | Unavailable | 63.00 | Unavailable | Unavailable |
| Percent of Waters Assessed | 17.30 | 49.80 | Unavailable | Unavailable | Unavailable | Unavailable | 89.37 | Unavailable | Unavailable |
Assessed Waters of Illinois by Watershed (8 Digit USGS Cataloging Unit)
Description of this table| Watershed | Size of Water | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rivers, Streams, Creeks (Miles) | Lakes, Ponds, Reservoir (Acres) | Bays, Estuaries (Square Miles) | Coastal Shorelines (Miles) | Oceans, Near Coastal Waters (Square Miles) | Wetlands (Acres) | Great Lakes Shoreline (Miles) | Great Lakes Open Water (Square Miles) | Inland Lake Shoreline (Miles) | |
| 8-digit HUC Name Not Reported | .00 | 146.90 | .00 | .00 | .00 | .00 | .00 | 153.70 | .00 |
| APPLE-PLUM | 253.37 | 1,697.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| BEAR-WYACONDA | 104.12 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| BIG MUDDY | 831.21 | 35,403.55 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| CACHE | 125.11 | 1,960.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| CAHOKIA-JOACHIM | 310.95 | 3,199.50 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| CHICAGO | 194.59 | 741.20 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| COPPERAS-DUCK | 145.24 | 167.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| DES PLAINES | 534.06 | 4,948.10 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| EMBARRAS | 494.07 | 815.10 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| FLINT-HENDERSON | 423.04 | 357.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| GREEN | 235.47 | 138.80 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| IROQUOIS | 320.45 | 125.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| KANKAKEE | 256.48 | 105.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| KISHWAUKEE | 318.04 | 229.50 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LA MOINE | 430.74 | 443.50 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LITTLE CALUMET-GALIEN | 7.56 | 2,054.00 | .00 | .00 | .00 | .00 | 10.30 | .00 | .00 |
| LITTLE WABASH | 586.23 | 4,682.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LOWER FOX | 297.88 | 757.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LOWER ILLINOIS | 509.34 | 1,106.70 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LOWER ILLINOIS-LAKE CHAUTAUQUA | 303.75 | 3,531.60 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LOWER ILLINOIS-SENACHWINE LAKE | 449.38 | 4,143.50 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LOWER KASKASKIA | 498.93 | 630.60 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LOWER OHIO | 202.66 | 628.40 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LOWER OHIO-BAY | 241.38 | 402.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LOWER ROCK | 607.91 | 402.60 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LOWER SANGAMON | 189.13 | 246.20 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LOWER WABASH | 200.87 | 48.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MACKINAW | 374.34 | 1,457.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MACOUPIN | 161.49 | 1,598.50 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MIDDLE KASKASKIA | 437.67 | 26,919.80 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MIDDLE WABASH-BUSSERON | 230.84 | 1,175.50 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MIDDLE WABASH-LITTLE VERMILION | 40.96 | 46.10 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| PECATONICA | 282.92 | 62.50 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| PERUQUE-PIASA | 90.03 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| PIKE-ROOT | 8.78 | 77.40 | .06 | .00 | .00 | .00 | 46.00 | .00 | .00 |
| SALINE | 331.15 | 2,958.80 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SALT | 393.53 | 5,074.40 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SHOAL | 224.37 | 4,529.40 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SKILLET | 224.25 | 727.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SOUTH FORK SANGAMON | 268.07 | 7,408.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SPOON | 642.61 | 1,363.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SUGAR | 34.12 | 285.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| THE SNY | 299.44 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| UPPER FOX | 127.49 | 12,717.60 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| UPPER ILLINOIS | 227.05 | 2,955.80 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| UPPER KASKASKIA | 364.59 | 11,219.50 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| UPPER MISSISSIPPI-CAPE GIRARDEAU | 290.63 | 117.10 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| UPPER ROCK | 5.65 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| UPPER SANGAMON | 307.84 | 3,277.20 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| VERMILION | 334.52 | 922.40 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| VERMILION | 441.10 | 46.50 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
Illinois Assessed Waters
Individual Use Support for Rivers and Streams
Description of this table
| State Designated Use | Total Miles Assessed | Percent Good | Percent Threatened | Percent Impaired |  % Good |
|---|---|---|---|---|---|
 % Threatened |
|||||
 % Impaired |
|||||
| AQUATIC LIFE | 14,688.71 | 62.27 | .00 | 37.73 | |
| FISH CONSUMPTION | 6,752.95 | 58.86 | .00 | 41.14 | |
| PRIMARY CONTACT (RECREATION) | 3,803.21 | 39.25 | .00 | 60.75 | |
| PUBLIC WATER SUPPLY | 1,087.83 | 24.54 | .00 | 75.46 | |
| SECONDARY CONTACT AND INDIGENOUS AQUATIC LIFE WATERS | 85.25 | 38.21 | .00 | 61.79 | |
Illinois Assessed Waters
Water Quality Attainment for Rivers and Streams
Description of this table
| Attainment Status | Miles | Percent of Assessed |
| Good | 6,499.58 | 43.13 |
| Threatened | .00 | .00 |
| Impaired | 8,569.84 | 56.87 |
| Total Miles Assessed | 15,069.42 | 100.00 |
Illinois Top Causes of Impairments
for Rivers and Streams
Description of this table
| # | State Cause Name | Total Miles Impaired |
|---|---|---|
| 1 | OXYGEN, DISSOLVED | 2,864.20 |
| 2 | POLYCHLORINATED BIPHENYLS | 2,646.25 |
| 3 | FECAL COLIFORM | 2,310.63 |
| 4 | SEDIMENTATION/SILTATION | 2,171.17 |
| 5 | PHOSPHORUS | 2,171.04 |
| 6 | HABITAT ASSESSMENT (STREAMS) | 1,998.73 |
| 7 | MANGANESE | 1,933.41 |
| 8 | TOTAL SUSPENDED SOLIDS (TSS) | 1,699.27 |
| 9 | NITROGEN (TOTAL) | 1,288.43 |
| 10 | MERCURY | 1,034.37 |
Illinois Top Probable Sources of Impairments
for Rivers and Streams
Description of this table
| # | State Source Name | Total Miles Impaired by Source |
|---|---|---|
| 1 | SOURCE UNKNOWN | 5,549.16 |
| 2 | NON-IRRIGATED CROP PRODUCTION | 1,867.96 |
| 3 | MUNICIPAL POINT SOURCE DISCHARGES | 1,257.21 |
| 4 | CHANNELIZATION | 1,130.81 |
| 5 | URBAN RUNOFF/STORM SEWERS | 946.63 |
| 6 | AGRICULTURE | 926.98 |
| 7 | STREAMBANK MODIFICATIONS/DESTABLIZATION | 673.85 |
| 8 | INTENSIVE ANIMAL FEEDING OPERATIONS | 602.00 |
| 9 | SURFACE MINING | 514.54 |
| 10 | FLOW REGULATION/MODIFICATION | 470.41 |
Illinois Assessed Waters
Individual Use Support for Lakes, Ponds and Reservoirs
Description of this table
| State Designated Use | Total Acres Assessed | Percent Good | Percent Threatened | Percent Impaired | % Good |
|---|---|---|---|---|---|
| % Threatened |
|||||
| % Impaired |
|||||
| AQUATIC LIFE | 148,986.20 | 56.23 | .00 | 43.77 | |
| FISH CONSUMPTION | 120,586.60 | 75.39 | .00 | 24.61 | |
| PRIMARY CONTACT (RECREATION) | 148,688.70 | 14.40 | .00 | 85.60 | |
| PUBLIC WATER SUPPLY | 75,909.35 | 10.67 | .00 | 89.33 | |
| SECONDARY CONTACT (RECREATION) | 148,960.20 | 8.03 | .00 | 91.97 | |
| SECONDARY CONTACT AND INDIGENOUS AQUATIC LIFE WATERS | 1,600.00 | 100.00 | .00 | .00 | |
Illinois Assessed Waters
Water Quality Attainment for Lakes, Ponds and Reservoirs
Description of this table
| Attainment Status | Acres | Percent of Assessed |
| Good | 9,150.85 | 5.94 |
| Threatened | .00 | .00 |
| Impaired | 144,897.40 | 94.06 |
| Total Acres Assessed | 154,048.25 | 100.00 |
Illinois Top Causes of Impairments
for Lakes, Ponds and Reservoirs
Description of this table
| # | State Cause Name | Total Acres Impaired |
|---|---|---|
| 1 | PHOSPHORUS (TOTAL) | 65,378.90 |
| 2 | MANGANESE | 63,455.50 |
| 3 | TOTAL SUSPENDED SOLIDS (TSS) | 62,919.30 |
| 4 | EXCESS ALGAL GROWTH | 61,035.70 |
| 5 | PHOSPHORUS | 59,430.80 |
| 6 | POLYCHLORINATED BIPHENYLS | 21,811.70 |
| 7 | HABITAT ASSESSMENT (LAKES) | 11,658.40 |
| 8 | SEDIMENTATION/SILTATION | 9,226.60 |
| 9 | NON-NATIVE FISH/ANIMALS | 8,044.00 |
| 10 | OXYGEN, DISSOLVED | 6,270.90 |
Illinois Top Probable Sources of Impairments
for Lakes, Ponds and Reservoirs
Description of this table
| # | State Source Name | Total Acres Impaired by Source |
|---|---|---|
| 1 | SOURCE UNKNOWN | 94,953.80 |
| 2 | NON-IRRIGATED CROP PRODUCTION | 52,706.40 |
| 3 | RECREATION AND TOURISM ACTIVITIES (OTHER THAN BOATING - SEE 7900) | 44,145.40 |
| 4 | STREAMBANK MODIFICATIONS/DESTABLIZATION | 43,448.40 |
| 5 | CONTAMINATED SEDIMENTS | 32,385.20 |
| 6 | FOREST/GRASSLAND/PARKLAND | 22,604.70 |
| 7 | URBAN RUNOFF/STORM SEWERS | 19,563.80 |
| 8 | ON-SITE TREATMENT SYSTEMS (SEPTIC SYSTEMS AND SIMILAR DECENCENTRALIZED SYSTEMS) | 11,179.00 |
| 9 | DREDGING (E.G., FOR NAVIGATION CHANNELS) | 5,993.50 |
| 10 | MUNICIPAL POINT SOURCE DISCHARGES | 4,585.00 |
Illinois Assessed Waters
Individual Use Support for Bays and Estuaries
Description of this table
| State Designated Use | Total Square Miles Assessed | Percent Good | Percent Threatened | Percent Impaired | % Good |
|---|---|---|---|---|---|
| % Threatened |
|||||
| % Impaired |
|||||
| AQUATIC LIFE | .06 | .00 | .00 | 100.00 | |
| FISH CONSUMPTION | .06 | .00 | .00 | 100.00 | |
Illinois Assessed Waters
Water Quality Attainment for Bays and Estuaries
Description of this table
| Attainment Status | Square Miles | Percent of Assessed |
| Good | .00 | .00 |
| Threatened | .00 | .00 |
| Impaired | .06 | 100.00 |
| Total Square Miles Assessed | .06 | 100.00 |
Illinois Top Causes of Impairments
for Bays and Estuaries
Description of this table
| # | State Cause Name | Total Square Miles Impaired |
|---|---|---|
| 1 | ARSENIC | .06 |
| 2 | ZINC | .06 |
| 3 | NITROGEN (TOTAL) | .06 |
| 4 | CHROMIUM (TOTAL) | .06 |
| 5 | COPPER | .06 |
| 6 | POLYCHLORINATED BIPHENYLS | .06 |
| 7 | PHOSPHORUS | .06 |
| 8 | CADMIUM | .06 |
| 9 | LEAD | .06 |
Illinois Top Probable Sources of Impairments
for Bays and Estuaries
Description of this table
| # | State Source Name | Total Square Miles Impaired by Source |
|---|---|---|
| 1 | CONTAMINATED SEDIMENTS | .06 |
| 2 | INDUSTRIAL POINT SOURCE DISCHARGE | .06 |
| 3 | URBAN RUNOFF/STORM SEWERS | .06 |
Illinois Assessed Waters
Individual Use Support for Great Lakes Shoreline
Description of this table
| State Designated Use | Total Miles Assessed | Percent Good | Percent Threatened | Percent Impaired | % Good |
|---|---|---|---|---|---|
| % Threatened |
|||||
| % Impaired |
|||||
| PRIMARY CONTACT (RECREATION) | 56.30 | 24.51 | .00 | 75.49 | |
Illinois Assessed Waters
Water Quality Attainment for Great Lakes Shoreline
Description of this table
| Attainment Status | Miles | Percent of Assessed |
| Good | 13.80 | 24.51 |
| Threatened | .00 | .00 |
| Impaired | 42.50 | 75.49 |
| Total Miles Assessed | 56.30 | 100.00 |
Illinois Top Causes of Impairments
for Great Lakes Shoreline
Description of this table
| # | State Cause Name | Total Miles Impaired |
|---|---|---|
| 1 | BACTERIA, ESCHERICHIA COLI | 42.50 |
Illinois Top Probable Sources of Impairments
for Great Lakes Shoreline
Description of this table
| # | State Source Name | Total Miles Impaired by Source |
|---|---|---|
| 1 | URBAN RUNOFF/STORM SEWERS | 27.00 |
| 2 | WET WEATHER DISCHARGES (POINT SOURCE AND COMBINATION OF STORMWATER, SSO OR CSO) | 9.70 |
| 3 | WATERFOWL | 9.50 |
| 4 | SOURCE UNKNOWN | 9.30 |
Illinois Assessed Waters
Individual Use Support for Great Lakes Open Water
Description of this table
| State Designated Use | Total Square Miles Assessed | Percent Good | Percent Threatened | Percent Impaired | % Good |
|---|---|---|---|---|---|
| % Threatened |
|||||
| % Impaired |
|||||
| AQUATIC LIFE | 153.70 | 100.00 | .00 | .00 | |
| FISH CONSUMPTION | 153.70 | .00 | .00 | 100.00 | |
| PRIMARY CONTACT (RECREATION) | 153.70 | 100.00 | .00 | .00 | |
| PUBLIC WATER SUPPLY | 151.30 | 100.00 | .00 | .00 | |
| SECONDARY CONTACT (RECREATION) | 153.70 | 100.00 | .00 | .00 | |
Illinois Assessed Waters
Water Quality Attainment for Great Lakes Open Water
Description of this table
| Attainment Status | Square Miles | Percent of Assessed |
| Good | .00 | .00 |
| Threatened | .00 | .00 |
| Impaired | 153.70 | 100.00 |
| Total Square Miles Assessed | 153.70 | 100.00 |
Illinois Top Causes of Impairments
for Great Lakes Open Water
Description of this table
| # | State Cause Name | Total Square Miles Impaired |
|---|---|---|
| 1 | POLYCHLORINATED BIPHENYLS | 153.70 |
Illinois Top Probable Sources of Impairments
for Great Lakes Open Water
Description of this table
| # | State Source Name | Total Square Miles Impaired by Source |
|---|---|---|
| 1 | CONTAMINATED SEDIMENTS | 153.70 |
| 2 | ATMOSPHERIC DEPOSITION | 153.70 |
| 3 | SOURCE UNKNOWN | 29.80 |
Illinois
Causes of Impairment
Description of this table| State Cause Name | Size of Assessed Waters with Listed Causes of Impairment | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rivers, Streams, Creeks (Miles) | Lakes, Ponds, Reservoir (Acres) | Bays, Estuaries (Square Miles) | Coastal Shorelines (Miles) | Oceans, Near Coastal Waters (Square Miles) | Wetlands (Acres) | Great Lakes Shoreline (Miles) | Great Lakes Open Waters (Square Miles) | Inland Lake Shoreline (Miles) | |
| .ALPHA.-BHC | 3.76 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| ALDRIN | 81.19 | 4,419.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| AMMONIA (TOTAL) | 70.11 | 2,048.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| AMMONIA (UN-IONIZED) | 29.47 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| AQUATIC PLANTS - NATIVE | 37.66 | 124.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| ARSENIC | 9.35 | .00 | .06 | .00 | .00 | .00 | .00 | .00 | .00 |
| ATRAZINE | 435.62 | 1,059.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| BACTERIA, ESCHERICHIA COLI | .00 | .00 | .00 | .00 | .00 | .00 | 42.50 | .00 | .00 |
| BARIUM | 33.79 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| BORON | 53.76 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| CADMIUM | 72.76 | 524.00 | .06 | .00 | .00 | .00 | .00 | .00 | .00 |
| CHLORDANE | 90.17 | 4,791.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| CHLORIDE | 195.95 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| CHROMIUM (TOTAL) | 9.22 | .00 | .06 | .00 | .00 | .00 | .00 | .00 | .00 |
| COPPER | 121.30 | .00 | .06 | .00 | .00 | .00 | .00 | .00 | .00 |
| DDT | 145.03 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| DIELDRIN | 28.26 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| ENDRIN | 30.51 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| EXCESS ALGAL GROWTH | 198.59 | 61,035.70 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| EXOTIC SPECIES | .00 | 110.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| FECAL COLIFORM | 2,310.63 | 496.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| FISH KILLS | 76.87 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| FISH-PASSAGE BARRIER | 78.13 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| FLOW ALTERATIONS | 445.85 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| FLUORIDE | 23.58 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| HABITAT ASSESSMENT (LAKES) | .00 | 11,658.40 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| HABITAT ASSESSMENT (STREAMS) | 1,998.73 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| HEPTACHLOR | 18.40 | 2,107.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| HEXACHLOROBENZENE | 112.06 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| IMPAIRMENT UNKNOWN | 291.21 | 2,740.10 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| IRON | 162.01 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LEAD | 2.60 | .00 | .06 | .00 | .00 | .00 | .00 | .00 | .00 |
| LINDANE | 21.33 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MANGANESE | 1,933.41 | 63,455.50 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MERCURY | 1,034.37 | 6,264.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| METHOXYCHLOR | 65.73 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| NICKEL | 74.44 | 325.40 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| NITROGEN (TOTAL) | 1,288.43 | 21.00 | .06 | .00 | .00 | .00 | .00 | .00 | .00 |
| NITROGEN, NITRATE | 86.53 | 4,508.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| NON-NATIVE FISH/ANIMALS | 25.43 | 8,044.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| OIL AND GREASE | 30.63 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| OXYGEN, DISSOLVED | 2,864.20 | 6,270.90 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| PH | 1,023.85 | 3,051.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| PHOSPHORUS | 2,171.04 | 59,430.80 | .06 | .00 | .00 | .00 | .00 | .00 | .00 |
| PHOSPHORUS (TOTAL) | .00 | 65,378.90 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| POLYCHLORINATED BIPHENYLS | 2,646.25 | 21,811.70 | .06 | .00 | .00 | .00 | .00 | 153.70 | .00 |
| SALINITY/TDS/CHLORIDES | 82.23 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SEDIMENTATION/SILTATION | 2,171.17 | 9,226.60 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SILVER | 367.08 | 4,194.40 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SULFATES | 584.72 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| TOTAL DISSOLVED SOLIDS | 626.23 | 261.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| TOTAL SUSPENDED SOLIDS (TSS) | 1,699.27 | 62,919.30 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| UNSPECIFIED NUTRIENTS | 9.63 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| ZINC | 132.04 | 2,631.00 | .06 | .00 | .00 | .00 | .00 | .00 | .00 |
Illinois
Probable Sources Contributing to Impairment
Description of this table| State Source Name | Size of Assessed Waters with Probable Sources of Impairment | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rivers, Streams, Creeks (Miles) | Lakes, Ponds, Reservoir (Acres) | Bays, Estuaries (Square Miles) | Coastal Shorelines (Miles) | Oceans, Near Coastal Waters (Square Miles) | Wetlands (Acres) | Great Lakes Shoreline (Miles) | Great Lakes Open Waters (Square Miles) | Inland Lake Shoreline (Miles) | |
| ACID MINE DRAINAGE | 87.08 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| AGRICULTURE | 926.98 | 3,577.60 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| ATMOSPHERIC DEPOSITION | .00 | .00 | .00 | .00 | .00 | .00 | .00 | 153.70 | .00 |
| CHANNELIZATION | 1,130.81 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| CONTAMINATED SEDIMENTS | 283.83 | 32,385.20 | .06 | .00 | .00 | .00 | .00 | 153.70 | .00 |
| CROP-RELATED SOURCES | 94.56 | 326.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| DAM CONSTRUCTION (OTHER THAN UPSTREAM FLOOD CONTROL PROJECTS) | 57.17 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| DRAINAGE/FILLING/LOSS OF WETLANDS | 7.56 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| DREDGING (E.G., FOR NAVIGATION CHANNELS) | .00 | 5,993.50 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| FLOW REGULATION/MODIFICATION | 470.41 | 191.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| FOREST/GRASSLAND/PARKLAND | 11.66 | 22,604.70 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| GOLF COURSES | 2.80 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| GROUNDWATER LOADINGS | .00 | 4.90 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| HABITAT MODIFICATION - OTHER THAN HYDROMODIFICATION | 43.89 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| HERBICIDE/ALGICIDE APPLICATION | .00 | 920.60 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| HIGHWAY/ROAD/BRIDGE RUNOFF (NON-CONSTRUCTION RELATED) | 55.47 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| HIGHWAYS, ROADS, BRIDGES, INFRASTURCTURE (NEW CONSTRUCTION) | 10.16 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| HYDROMODIFICATION | 456.66 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| IMPACTS FROM ABANDONED MINE LANDS (INACTIVE) | 25.01 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| INDUSTRIAL LAND TREATMENT | 3.62 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| INDUSTRIAL POINT SOURCE DISCHARGE | 115.48 | 3,191.10 | .06 | .00 | .00 | .00 | .00 | .00 | .00 |
| INTENSIVE ANIMAL FEEDING OPERATIONS | 602.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LANDFILLS | .00 | 172.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LOSS OF RIPARIAN HABITAT | 454.35 | 40.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MAJOR INDUSTRIAL POINT SOURCES | 12.47 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MAJOR MUNICIPAL POINT SOURCES - WET WEATHER DISCHARGES | 13.32 | 225.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MINE TAILINGS | 68.36 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MUNICIPAL POINT SOURCE DISCHARGES | 1,257.21 | 4,585.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| NATURAL SOURCES | 107.16 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| NON-IRRIGATED CROP PRODUCTION | 1,867.96 | 52,706.40 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| OFF-FARM ANIMAL HOLDING/MANAGEMENT AREA | 90.86 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| ON-SITE TREATMENT SYSTEMS (SEPTIC SYSTEMS AND SIMILAR DECENCENTRALIZED SYSTEMS) | .00 | 11,179.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| OTHER | .00 | 2,187.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| PASTURE GRAZING - RIPARIAN AND/OR UPLAND | 127.28 | 588.50 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| PETROLEUM ACTIVITIES | 210.04 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| RECREATION AND TOURISM ACTIVITIES (OTHER THAN BOATING - SEE 7900) | 31.52 | 44,145.40 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| RESOURCE EXTRACTION | 270.81 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SANITARY SEWER OVERFLOWS (COLLECTION SYSTEM FAILURES) | 14.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SILVICULTURE ACTIVITIES | .00 | 10.70 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SITE CLEARANCE (LAND DEVELOPMENT OR REDEVELOPMENT) | 190.12 | 1,676.60 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SOURCE UNKNOWN | 5,549.16 | 94,953.80 | .00 | .00 | .00 | .00 | 9.30 | 29.80 | .00 |
| SPECIALITY CROP PRODUCTION | .00 | 71.30 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SPILLS (ACCIDENTAL) | 14.72 | 40.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| STREAMBANK MODIFICATIONS/DESTABLIZATION | 673.85 | 43,448.40 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SUBSURFACE (HARDROCK) MININING | 21.97 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SURFACE MINING | 514.54 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| UPSTREAM IMPOUNDMENTS (E.G., PL-566 NRCS STRUCTURES) | 169.47 | 3.70 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| URBAN RUNOFF/STORM SEWERS | 946.63 | 19,563.80 | .06 | .00 | .00 | .00 | 27.00 | .00 | .00 |
| WATERFOWL | .00 | 1,461.00 | .00 | .00 | .00 | .00 | 9.50 | .00 | .00 |
| WET WEATHER DISCHARGES (POINT SOURCE AND COMBINATION OF STORMWATER, SSO OR CSO) | 305.48 | .00 | .00 | .00 | .00 | .00 | 9.70 | .00 | .00 |
| WILDCAT SEWER | 10.88 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
