Arizona’s 2012/14 Impaired Waters Priority Ranking for TMDL Development

This list contains assessment units that were assessed as impaired (Category 5) by ADEQ or EPA during the current and previous assessment listing cycles. The year each parameter was listed is located in parentheses after each parameter.

Cause(s) of Impairment (year first Assessment Unit Priority listed) Bill Williams Watershed Alamo Lake Ammonia (2004), mercury in fish tissue Medium 15030204-0040 (2002- EPA), high pH (1996) Bill Williams River Alamo Lake to Castaneda Wash Ammonia and high pH (2006) Medium 15030204-003 Boulder Creek Beryllium (dissolved) Tributary at 344114/1131800 to Wilder Creek Low (2010) 15030202-006B Coors Lake Mercury in fish tissue (2004- EPA) Low 15030202-5000 Colorado-Grand Canyon Watershed Colorado River Selenium (total) and suspended sediment Parashant Canyon to Diamond Creek Low concentration (2004) 15010002-003 Lake Powell Mercury in fish tissue (2010- EPA) Low 14070006-1130 Paria River Suspended sediment concentration Utah border to Colorado River Medium (2004), E. coli (2006) 14070007-123 Virgin River Sullivan’s Canyon to Beaver Dam Wash Selenium (total) (2012) Medium 15010010-004 Virgin River Selenium (total) and suspended sediment Beaver Dam Wash to Big Bend Wash Medium concentration (2004), E. coli (2010) 15010010-003 Colorado-Lower Gila Watershed Colorado River Hoover Dam to Lake Mohave Selenium (total) (2004) Low 15030101-015 Colorado River Bill Williams River to Osborne Wash Selenium (total) (2010) Low 15030104-020 Colorado River Low dissolved oxygen and selenium Main Canal to Mexico border Low (total) (2006) 15030107-001 Colorado River Imperial Dam to Gila River Selenium (total) (2010) Low 15030107-003 Gila River Coyote Wash to Fortuna Wash Selenium (total) and boron (total) (2004) Low 15070201-003 Lake Mohave Selenium (total) (2010) Low 15030101-0960 Painted Rock Borrow Pit Lake Low dissolved oxygen (1992) Low 15070201-1010 Little Colorado Watershed Bear Canyon Lake Low pH (2004- EPA) Low 15020008-0130 Black Canyon Lake Ammonia (2010) Low 15020010-0180 Lyman Lake Mercury in fish tissue (2004- EPA) Medium 15020001-0850 Pintail Lake Ammonia (2010) Low 15020005-5000 Puerco River Dead Wash to Ninemile Wash Copper (dissolved) (2010), E. coli (2012) Low 15020007-007 Telephone Lake Ammonia (2010) Low 15020005-1500

1 Arizona’s 2012/14 Impaired Waters Priority Ranking for TMDL Development

Cause(s) of Impairment (year first Assessment Unit Priority listed) Middle Gila Watershed Agua Fria River Sycamore Creek to Big Bug Creek E. coli (2010) Low 15070102-023 Alvord Lake Ammonia (2004) Low 15060106B-0050 Arnett Creek Headwaters to Queen Creek Copper (dissolved) (2010) High 15050100-1818 Chaparral Park Lake Low dissolved oxygen and E. coli (2004) Low 15060106B-0300 Cortez Park Lake Low dissolved oxygen and high pH Low 15060106B-0410 (2004) Gila River Suspended sediment concentration San Pedro River to Mineral Creek Low (2006) 15050100-008 Gila River Selenium (total) (2004), boron (total) Centennial Wash - Gillespie Dam High (1992) 15070101-008 Lake Pleasant Mercury in fish tissue (2006- EPA) Medium 15070102-1100 Mineral Creek Copper (dissolved) (1992), selenium Devil's Canyon to Gila River (total) (2004), low dissolved oxygen Low 15050100-012B (2006) Queen Creek Copper (dissolved) (2002), lead (total) Headwaters to Superior WWTP discharge High (2010), selenium (total) (2012) 15050100-014A Queen Creek Superior WWTP discharge to Potts Canyon Copper (dissolved) (2004) High 15050100-014B Queen Creek Potts Canyon to Whitlow Canyon Copper (dissolved) (2010) High 15050100-014C Tributary to Queen Creek Headwaters to Queen Creek Copper (dissolved) (2010) High 15050100-991 Unnamed Tributary to Queen Creek Headwaters to Queen Creek Copper (dissolved) (2010) High 15050100-1843 Unnamed Tributary to Queen Creek Headwaters to Queen Creek Copper (dissolved) (2010) High 15050100-1000 Salt Watershed Apache Lake Low dissolved oxygen (2006) Low 15060106A-0070 Canyon Lake Low dissolved oxygen (2004) Low 15060106A-0250 Christopher Creek Headwaters to Tonto Creek Phosphorus (2006) Low 15060105-353 *Also on Not Attaining (4A) List Crescent Lake High pH (2002- EPA) Low 15060101-0420 Five Point Tributary Headwaters to Pinto Creek Copper (dissolved) (2006) High 15060103-885 Pinto Creek West Fork Pinto Creek to Roosevelt Lake Selenium (total) (2004) Low 15060103-018C *Also on Not Attaining (4A) List Roosevelt Lake Mercury in fish tissue (2006- EPA) Medium 15060103-1240 Salt River Canyon Creek to Cherry Creek Selenium (total) (2012) Low 15060103-007

2 Arizona’s 2012/14 Impaired Waters Priority Ranking for TMDL Development

Cause(s) of Impairment (year first Assessment Unit Priority listed) Salt River Suspended sediment (2006), nitrogen, Pinal Creek to Roosevelt Lake Medium phosphorus and E. coli (2010) 15060103-004 Salt River Stewart Mountain Dam to Verde River Low dissolved oxygen (2004) Low 15060106A-003 Tonto Creek Headwaters to 341810/1110414 Low dissolved oxygen (2006) Low 15060105-013A *Also on Not Attaining (4A) List Tonto Creek Tributary @ 341810/1110414 to Haigler Creek Mercury in Fish Tissue (2010- EPA) Low 15060105-013B *Also on Not Attaining (4A) List Tonto Creek Haigler Creek to Spring Creek Mercury in fish tissue (2010-EPA) Low 15060105-011 Tonto Creek Spring Creek to Rye Creek Mercury in fish tissue (2010-EPA) Low 15060105-009 Tonto Creek Rye Creek to Gun Creek Mercury in fish tissue (2010-EPA) Low 15060105-008 Tonto Creek Gun Creek to Greenback Creek Mercury in fish tissue (2010-EPA) Low 15060105-006 Tonto Creek Greenback Creek to Roosevelt Lake Mercury in fish tissue (2010-EPA) Low 15060105-0004 San Pedro Watershed Brewery Gulch Headwaters to Mule Gulch Copper (dissolved) (2004) Low 15080301-337 Mule Gulch Headwaters to above Lavender Pit Copper (dissolved) (1990) Low 15080301-090A Mule Gulch Above Lavender Pit to Bisbee WWTP Copper (dissolved) (1990) Low discharge 15080301-090B Mule Gulch Bisbee WWTP discharge to Highway 80 Copper (total and dissolved) (1990) Low bridge 15080301-090C San Pedro River Mexico border to Charleston E. coli and copper (dissolved) (2010) High 15050202-008 San Pedro River Babocomari Creek to Dragoon Wash E. coli (2004) High 15050202-003 Santa Cruz Watershed Nogales Wash Ammonia (2004), chlorine (1996), Mexico border to Potrero Creek High copper (dissolved) (2004), E. coli (1998) 15050301-011 Parker Canyon Lake Mercury in fish tissue (2004- EPA) Low 15050301-1040 Potrero Creek Chlorine, low dissolved oxygen, and E. Interstate 19 to Santa Cruz River High coli (2010) 15050301-500B Rose Canyon Lake Low pH (2004- EPA) Low 15050302-1260 Santa Cruz River Josephine Canyon to Tubac Bridge Ammonia and E. coli (2010) High 15050301-008A

3 Arizona’s 2012/14 Impaired Waters Priority Ranking for TMDL Development

Cause(s) of Impairment (year first Assessment Unit Priority listed) Santa Cruz River Nogales WWTP to Josephine Canyon Cadmium (dissolved) and E. coli (2012) High 15050301-009 *Also on Not Attaining (4B) List Sonoita Creek 1600 feet below Patagonia WWTP discharge Zinc (total) (2004), low dissolved oxygen Low to Patagonia Lake (1998) 15050301-013C Upper Gila Watershed Blue River Strayhorse Creek to San Francisco River E. coli (2006) Medium 15040004-025B Cave Creek Headwaters to South Fork Cave Creek Selenium (total) (2004) Low 15040006-852A Gila River Apache Creek to Skully Creek E. coli (2010) Medium 15040002-002 Gila River Bonita Creek to Yuma Wash Lead (total) (2010) Low 15040005-022 *Also on Not Attaining (4A) List Gila River Skully Creek to San Francisco River E. coli (2010) Medium 15040002-001 San Francisco River Blue River to Limestone Gulch E. coli (2006) Medium 15040004-003 San Francisco River Limestone Gulch to Gila River E. coli (2010) Medium 15040004-001 Verde Watershed Butte Creek Headwaters to Miller Creek E. coli (2012) High 15060202-768 East Verde River American Gulch to Verde River Arsenic (total) (2006) 15060203-022C East Verde River Ellison Creek to American Gulch Selenium (total) (2004) Low 15060203-022B Granite Creek Low dissolved oxygen (2004- EPA), E. Headwaters to Willow Creek High coli (2010) 15060202-059A Manzanita Creek Headwaters to Granite Creek E. coli (2012) High 15060202-772 Miller Creek Headwaters to Granite Creek E. coli (2010) High 15060202-767 Verde River Arsenic (total) (2010) Bartlett Dam to Camp Creek Low

15060203-004 Watson Lake Nitrogen, low dissolved oxygen, high pH High 15060202-1590 (2004- EPA) Willow Creek Reservoir Ammonia (2012) Low 15060202-1660

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