![[logo] US EPA](http://www.epa.gov/epafiles/images/logo_epaseal.gif){kind=logo}
Assessment Data for the State of Arizona Year 2008
National Assessment Database
-
Total Assessed Waters of Arizona
-
Assessed Waters of Arizona by Watershed (8 Digit USGS Cataloging Unit)
- Water Quality by Waterbody Type
- Rivers, Streams, and Creeks
- Lakes, Ponds, and Reservoirs
- Causes of Impairment
- Probable Sources Contributing to Impairment
- Glossary
State of Arizona websites: |
No State 305(b) Water Quality Assessment Report is available. |
Search for a Waterbody within Arizona
Total Assessed Waters for the State of Arizona
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) | Great Lakes Connecting Channel (Miles) | Inland Lake Shoreline (Miles) | ||
| Total Assessed Waters | 2,764.37 | 114,981.56 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| Estimated Total Water Size in AZ | 90,375.00 | 335,590.00 | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | |
| Percent of Waters Assessed | 3.06 | 34.26 | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | |
Assessed Waters of Arizona 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) | Great Lakes Connecting Channel (Miles) | ||
| 8-digit HUC Name Not Reported | 664.44 | 31,823.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| AGUA FRIA | 32.70 | 8,059.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| BIG CHINO-WILLIAMSON VALLEY | .00 | 7.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| BIG SANDY | 56.10 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| BILL WILLIAMS | 53.40 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| BLACK | 81.40 | 595.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| BRAWLEY WASH | .00 | 115.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| BURRO | 44.00 | 228.56 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| CANYON DIABLO | .00 | 1,940.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| CHEVELON CANYON | 19.30 | 110.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| GRAND CANYON | 39.90 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| HASSAYAMPA | 91.40 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| HAVASU CANYON | 3.30 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| HAVASU-MOHAVE LAKES | 40.40 | 46,827.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| IMPERIAL RESERVOIR | 13.40 | 600.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| KANAB | 12.80 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| LITTLE COLORADO HEADWATERS | 73.10 | 1,417.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| LOWER COLORADO | 47.50 | 385.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| LOWER COLORADO-MARBLE CANYON | 18.20 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| LOWER GILA | 28.30 | 185.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| LOWER GILA-PAINTED ROCK RESERVOIR | 82.50 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| LOWER LAKE POWELL | 16.30 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| LOWER SALT | 13.80 | 18,350.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| LOWER SAN PEDRO | 123.30 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| LOWER SANTA CRUZ | 8.60 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| LOWER VERDE | 98.00 | 2,375.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| LOWER VIRGIN | 39.70 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| MIDDLE GILA | 65.10 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| MIDDLE LITTLE COLORADO | 65.60 | 843.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| PARIA | 29.40 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| RILLITO | 46.80 | 22.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| SAN FRANCISCO | 118.70 | 120.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| SAN SIMON | 8.10 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| SANTA MARIA | 87.90 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| SILVER | 71.60 | 110.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| TONTO | 79.30 | 18,350.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| UPPER GILA-MANGAS | 31.50 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| UPPER GILA-SAN CARLOS RESERVOIR | 26.20 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| UPPER LITTLE COLORADO | 31.90 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| UPPER SALT | 55.10 | 18,350.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| UPPER SAN PEDRO | 102.40 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| UPPER SANTA CRUZ | 101.73 | 410.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| UPPER VERDE | 159.60 | 460.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| WHITEWATER DRAW | 14.20 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
| WILLCOX PLAYA | 3.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | |
Arizona 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 |
|||||
| Agricultural Irrigation | 1,475.23 | 95.13 | .00 | 4.87 | |
| Agricultural Livestock Watering | 2,272.27 | 94.17 | .00 | 5.83 | |
| Aquatic And Wildlife (Coldwater Fishery) | 731.60 | 73.24 | .00 | 26.76 | |
| Aquatic And Wildlife (Effluent Dependent Water) | 22.40 | 33.04 | .00 | 66.96 | |
| Aquatic And Wildlife (Ephemeral) | 39.80 | .00 | .00 | 100.00 | |
| Aquatic And Wildlife (Warmwater Fishery) | 1,448.63 | 66.30 | .00 | 33.70 | |
| Domestic Water Source | 413.90 | 93.77 | .00 | 6.23 | |
| Fish Consumption | 2,398.23 | 95.83 | .00 | 4.17 | |
| Full Body Contact | 1,931.53 | 82.39 | .00 | 17.61 | |
| Partial Body Contact | 78.00 | 55.00 | .00 | 45.00 | |
Arizona Assessed Waters
Overall Water Quality Attainment for Rivers and Streams
Description of this table
| Attainment Status | Miles | Percent of Assessed |
| Good | 1,747.74 | 63.22 |
| Threatened | .00 | .00 |
| Impaired | 1,016.63 | 36.78 |
| Total Miles Assessed | 2,764.37 | 100.00 |
Arizona Top Causes of Impairments
for Rivers and Streams
Description of this table
| # | State Cause Name | Total Miles Impaired |
|---|---|---|
| 1 | SELENIUM | 288.30 |
| 2 | ESCHERICHIA COLI (E. COLI) | 231.70 |
| 3 | COPPER | 195.60 |
| 4 | SOLIDS (SUSPENDED/BEDLOAD) | 164.00 |
| 5 | DISSOLVED OXYGEN | 105.90 |
| 6 | TURBIDITY | 99.20 |
| 7 | CHLORDANE | 98.90 |
| 8 | DDT | 98.90 |
| 9 | TOXAPHENE | 98.90 |
| 10 | PH | 93.00 |
Arizona Top Probable Sources of Impairments
for Rivers and Streams
Description of this table
| # | State Source Name | Total Miles Impaired by Source |
|---|---|---|
| 1 | NATURAL SOURCES | 822.73 |
| 2 | RANGELAND GRAZING | 410.40 |
| 3 | SOURCE UNKNOWN | 373.50 |
| 4 | SOURCES OUTSIDE STATE JURISDICTION OR BORDERS | 227.70 |
| 5 | MINE TAILINGS | 186.53 |
| 6 | IMPACTS FROM ABANDONED MINE LANDS (INACTIVE) | 170.43 |
| 7 | IRRIGATED CROP PRODUCTION | 149.30 |
| 8 | OTHER RECREATIONAL POLLUTION SOURCES | 137.40 |
| 9 | IMPACTS FROM HYDROSTRUCTURE FLOW REGULATION/MODIFICATION | 126.20 |
| 10 | WILDLIFE OTHER THAN WATERFOWL | 91.30 |
Arizona 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 |
|||||
| Agricultural Irrigation | 109,561.00 | 99.76 | .00 | .24 | |
| Agricultural Livestock Watering | 112,120.00 | 98.35 | .00 | 1.65 | |
| Aquatic And Wildlife (Coldwater Fishery) | 3,241.00 | 2.75 | .00 | 97.25 | |
| Aquatic And Wildlife (Warmwater Fishery) | 4,780.00 | 62.24 | .00 | 37.76 | |
| Domestic Water Source | 86,564.00 | 100.00 | .00 | .00 | |
| Fish Consumption | 94,322.56 | 85.55 | .00 | 14.45 | |
| Full Body Contact | 43,106.00 | 95.69 | .00 | 4.31 | |
| Partial Body Contact | 29.00 | .00 | .00 | 100.00 | |
Arizona Assessed Waters
Overall Water Quality Attainment for Lakes, Ponds and Reservoirs
Description of this table
| Attainment Status | Acres | Percent of Assessed |
| Good | 97,998.00 | 85.23 |
| Threatened | .00 | .00 |
| Impaired | 16,983.56 | 14.77 |
| Total Acres Assessed | 114,981.56 | 100.00 |
Arizona Top Causes of Impairments
for Lakes, Ponds and Reservoirs
Description of this table
| # | State Cause Name | Total Acres Impaired |
|---|---|---|
| 1 | MERCURY IN FISH TISSUE | 8,000.00 |
| 2 | MERCURY | 5,340.56 |
| 3 | DISSOLVED OXYGEN | 4,868.00 |
| 4 | PH | 2,093.00 |
| 5 | AMMONIA, UN-IONIZED | 1,456.00 |
| 6 | NITROGEN, TOTAL | 395.00 |
| 7 | CHLORDANE | 285.00 |
| 8 | DDT | 285.00 |
| 9 | TOXAPHENE | 285.00 |
| 10 | PHOSPHORUS, ELEMENTAL | 230.00 |
Arizona Top Probable Sources of Impairments
for Lakes, Ponds and Reservoirs
Description of this table
| # | State Source Name | Total Acres Impaired by Source |
|---|---|---|
| 1 | NATURAL SOURCES | 6,458.00 |
| 2 | SOURCE UNKNOWN | 5,835.00 |
| 3 | INTERNAL NUTRIENT RECYCLING | 4,745.00 |
| 4 | ATMOSPHERIC DEPOSITION - TOXICS | 3,926.56 |
| 5 | IMPACTS FROM ABANDONED MINE LANDS (INACTIVE) | 3,600.56 |
| 6 | MINE TAILINGS | 1,464.00 |
| 7 | SUBSURFACE (HARDROCK) MINING | 1,414.00 |
| 8 | ON-SITE TREATMENT SYSTEMS (SEPTIC SYSTEMS AND SIMILAR DECENTRALIZED SYSTEMS) | 505.00 |
| 9 | OTHER RECREATIONAL POLLUTION SOURCES | 439.00 |
| 10 | POST-DEVELOPMENT EROSION AND SEDIMENTATION | 415.00 |
Arizona
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 Water (Square Miles) | Great Lakes Connecting Channel (Miles) | Inland Lake Shoreline (Miles) | ||
| Ammonia, Un-ionized | 42.10 | 1,456.00 | |||||||||
| Aquatic Plants - Native | 15.00 | ||||||||||
| Arsenic | 28.80 | ||||||||||
| Boron | 59.40 | ||||||||||
| Cadmium | 51.60 | ||||||||||
| Chlordane | 98.90 | 285.00 | |||||||||
| Chlorine | 6.20 | ||||||||||
| Copper | 195.60 | ||||||||||
| DDT | 98.90 | 285.00 | |||||||||
| Dissolved Oxygen | 105.90 | 4,868.00 | |||||||||
| Escherichia Coli (E. Coli) | 231.70 | 12.00 | |||||||||
| Lead | 21.00 | ||||||||||
| Manganese | 1.40 | ||||||||||
| Mercury | 39.80 | 5,340.56 | |||||||||
| Mercury in Fish Tissue | 8,000.00 | ||||||||||
| Nitrates | 15.50 | ||||||||||
| Nitrogen, Total | 16.60 | 395.00 | |||||||||
| Phosphorus, Elemental | 230.00 | ||||||||||
| Phosphorus, Total | 16.10 | 15.00 | |||||||||
| Sedimentation/Siltation | 11.90 | ||||||||||
| Selenium | 288.30 | ||||||||||
| Silver | 17.40 | ||||||||||
| Solids (Suspended/Bedload) | 164.00 | ||||||||||
| Toxaphene | 98.90 | 285.00 | |||||||||
| Turbidity | 99.20 | ||||||||||
| Zinc | 63.03 | ||||||||||
| pH | 93.00 | 2,093.00 | |||||||||
Arizona
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 Water (Square Miles) | Great Lakes Connecting Channel (Miles) | Inland Lake Shoreline (Miles) | ||
| Aquaculture (Permitted) | 8.10 | ||||||||||
| Atmospheric Deposition - Toxics | 25.40 | 3,926.56 | |||||||||
| Cercla Npl (Superfund) Sites | 15.50 | ||||||||||
| Contaminated Sediments | 69.10 | 185.00 | |||||||||
| Forest Roads (Road Construction And Use) | 120.00 | ||||||||||
| Golf Courses | 39.10 | ||||||||||
| Illegal Dumping | 15.50 | ||||||||||
| Impacts From Abandoned Mine Lands (Inactive) | 170.43 | 3,600.56 | |||||||||
| Impacts From Hydrostructure Flow Regulation/Modification | 126.20 | 400.00 | |||||||||
| Internal Nutrient Recycling | 35.90 | 4,745.00 | |||||||||
| Irrigated Crop Production | 149.30 | 285.00 | |||||||||
| Livestock (Grazing Or Feeding Operations) | 7.30 | ||||||||||
| Loss Of Riparian Habitat | 39.10 | ||||||||||
| Mill Tailings | 33.23 | ||||||||||
| Mine Tailings | 186.53 | 1,464.00 | |||||||||
| Municipal (Urbanized High Density Area) | 6.20 | 187.00 | |||||||||
| Municipal Point Source Discharges | 15.00 | ||||||||||
| Natural Conditions - Water Quality Standards Use Attainability Analyses Needed | 47.00 | ||||||||||
| Natural Sources | 822.73 | 6,458.00 | |||||||||
| On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems) | 18.10 | 505.00 | |||||||||
| Other Recreational Pollution Sources | 137.40 | 439.00 | |||||||||
| Pipeline Breaks | 6.20 | ||||||||||
| Post-Development Erosion And Sedimentation | 38.20 | 415.00 | |||||||||
| Rangeland Grazing | 410.40 | 230.00 | |||||||||
| Residential Districts | 295.00 | ||||||||||
| Site Clearance (Land Development Or Redevelopment) | 185.00 | ||||||||||
| Source Unknown | 373.50 | 5,835.00 | |||||||||
| Sources Outside State Jurisdiction Or Borders | 227.70 | ||||||||||
| Subsurface (Hardrock) Mining | 25.20 | 1,414.00 | |||||||||
| Wildlife Other Than Waterfowl | 91.30 | ||||||||||
| Woodlot Site Management | 36.70 | 120.00 | |||||||||
