- Category 4a - Impaired water with a final/approved TMDL
- Category 4b - Impaired water with other pollution controls
- Category 5 - Impaired water, CWA Section 303(d) list, requires TMDL
What is a Total Maximum Daily Load (TMDL)?
A TMDL is a process through which pollution sources are identified. The study analyzes pollution sources of a waterbody and calculates the amount or 'load' of that specific pollutant that the water can receive and still maintain Water Quality Standards. TMDLs are a necessary first step toward waterbody recovery and are required for a waterbody to be 'de-listed' from the Alaska 303(d) Category 5 Impaired Waters List. A waterbody can also be taken off the list if other controls are in place to assure the recovery of the waterbody.
Within the tables waters are listed by region - Interior (IN), Southcentral (SC), Southeast (SE) - and alphabetically.
|Region||Category||Alaska ID||Waterbody||Location||Area of Concern||Water Quality Standard||Pollutant Parameters||Pollutant Sources|
|IN||4a||40402-001||Birch Creek Drainage: - Upper Birch Creek; Eagle Creek; Golddust Creek||North of Fairbanks||N/A||Turbidity||Turbidity||Placer Mining|
|IN||4a||40506-009||Garrison Slough||Eielson Air Force Base||N/A||Toxic & Other Deleterious Organic and Inorganic Substances||Polychlorinaged biphenyls (PCBs)||Military Base / Operations|
|IN||4a||40506-003||Noyes Slough||Fairbanks||7 miles||Residues||Debris||Urban Runoff|
|SC||4a||30102-604||Akutan Harbor||Akutan Island||N/A||Residues, Dissolved Gas||Settable Solids, Low Dissolved Oxygen||Seafood Processing /Waste|
|SC||4a||20401-004||Campbell Creek||Anchorage||10 miles||Fecal Coliform Bacteria||Fecal Coliform Bacteria||Urban Runoff|
|SC||4a||20401-402||Campbell Lake||Anchorage||125 acres||Fecal Coliform Bacteria||Fecal Coliform Bacteria||Urban Runoff|
|SC||4a||20401-003||Chester Creek||Anchorage||4.1 miles||Fecal Coliform Bacteria||Fecal Coliform Bacteria||Urban Runoff, Industrial|
|SC||4a||20402-002||Eagle River||Eagle River||N/A||Toxic & Other Deleterious Organic and Inorganic Substances||Ammonia, Chlorine, Copper, Lead, Silver||Wastewater Treatment Facility|
|SC||4a||20401-005||Fish Creek||Anchorage||6.4 miles||Fecal Coliform Bacteria||Fecal Coliform Bacteria||Urban Runoff|
|SC||4a||20401-006||Furrow Creek||Anchorage||5.3 miles||Fecal Coliform Bacteria||Fecal Coliform Bacteria||Urban Runoff|
|SC||4a||30101-501||King Cove||King Cove||N/A||Residues||Seafood Waste Residue||Seafood Processing/Waste|
|SC||4a||20505-409||Lake Lucille||Wasilla||N/A||Dissolved Gas||Low Dissolved Oxygen||Urban Runoff|
|SC||4a||20401-017||Little Campbell Creek||Anchorage||8.3 miles||Fecal Coliform Bacteria||Fecal Coliform Bacteria||Urban Runoff|
|SC||4a||20401-024||Little Rabbit Creek||Anchorage||6.2 miles||Fecal Coliform Bacteria||Fecal Coliform Bacteria||Urban Runoff|
|SC||4a||20401-018||Little Survival Creek||Anchorage||3.0 miles||Fecal Coliform Bacteria||Fecal Coliform Bacteria||Urban Runoff|
|SC||4a||20401-020||Ship Creek Glenn Hwy. Bridge. Down to Mouth||Anchorage||Glenn Hwy. Bridge. to Mouth||Fecal Coliform Bacteria||Fecal Coliform Bacteria||Urban Runoff|
|SC||4a||30102-603||South Unalaska Bay||Unalaska Island||N/A||Residues, Low Dissolved Oxygen (BOD5)||Seafood Waste Residues, Dissolved Gas||Seafood Processing Waste|
|SC||4a||30102-607||Udagak Bay||Unalaska Island||N/A||Residues||Setteable Solids||Seafood Processing Waste|
|SC||4a||20401-419||University Lake||Anchorage||10 acres||Fecal Coliform Bacteria||Fecal Coliform Bacteria||Urban Runoff|
|SC||4a||20401-421||Westchester Lagoon||Anchorage||30 acres||Fecal Coliform Bacteria||Fecal Coliform Bacteria||Urban Runoff|
|SE||4a||10301-005||Duck Creek||Juneau||N/A||Dissolved Gas, Residues, Toxic & Other Deleterious Organic and Inorganic Substances, Fecal Coliform Bacteria, Turbidity||Low Dissolved Oxygen, Debris, Iron, Fecal Coliform Bacteria, and Turbidity||Urban Runoff, Landfill, Road Runoff, Land Development|
|SE||4a||10203-005||Granite Creek||Sitka||N/A||Turbidity, Sediment||Turbidity, Sediment||Gravel Mining|
|SE||4a||10203-601-001||Herring Cove of Silver Bay||Sitka||102 acres||Residues||Bark & Woody Debris||Log Storage from former Pulp Mill Operations|
|SE||4a||10301-004||Jordan Creek||Juneau||3 miles from tide-water up-stream||Dissolved Gas, Residues, Sediment||Debris, Sediment, Low Dissolved Oxygen||Land Development, Road Runoff|
|SE||4a||10203-602||Klag Bay||West Chichagof Island||1.25 acres||Toxic & Other Deleterious Organic and Inorganic Substances||Metals - Arsenic, Cobalt, Copper, Lead, Manganese, Mercury, Silver, Zinc||Mining|
|SE||4a||10301-001||Lemon Creek||Juneau||N/A||Turbidity, Sediment||Turbidity, Sediment||Urban Runoff, Gravel Mining|
|SE||4a||10301-014||Pederson Hill Creek||Juneau||Lower two miles||Fecal Coliform Bacteria||Fecal Coliform Bacteria||Septic Tanks|
|SE||4a||10303-004||Pullen Creek (Lower Mile)||Skagway||Lower mile of Pullen Creek||Toxic & Other Deleterious Organic and Inorganic Substances||Metals – Cadmium, Copper, Lead, Zinc||Industrial|
|SE||4a||10203-601||Silver Bay||Sitka||6.5 acres||Residues, Toxic & Other Deleterious Organic and Inorganic Substances||Pulp Residues, Logs, Bark & Woody Debris, Sediment Toxicity due to Wood Decomposition By-products||Industrial, Historical Pulp Mill Activity|
|SE||4a||10103-602||Thorne Bay||Prince of Wales Island||7.5 acres||Residues||Bark & Wood Debris||Historical Log Transfer Facility|
|SE||4a||10301-017||Vanderbilt Creek||Juneau||N/A||Turbidity, Residues, Sediment||Turbidity, Debris, Sediment||Urban Runoff|
|SE||4a||10102-601||Ward Cove||Ketchikan||250 acres||Residues, Dissolved Gas||Pulp Residues, Logs, Bark & Woody Debris, Low Dissolved Oxygen||Industrial|
|IN||4b||40501-001||Cabin Creek||Nabesna||1.5 miles||Toxic & Other Deleterious Organic and Inorganic Substances||Manganese, Arsenic, Iron, Copper & Cadmium||Mine Tailings|
|SC||4b||N/A||Exxon Valdez Beaches||Prince William Sound – Alaska Peninsula||23 beaches||Petroleum Hydrocarbons, Oil & Grease||Petroleum Products||Oil Spill|
|SE||4b||10203-808||East Port Frederick||NE Chichagof Island||0.4 acres||Residues||Bark & Woody Debris||Log Transfer Facility|
|SE||4b||10103-031||Fubar Creek||Prince of Wales Island||N/A||Sediment||Sediment||Timber Harvesting|
|IN||5||40506-007||Chena River||Fairbanks||15 miles||Sediment||Sediment||Urban Runoff|
|IN||5||40506-002||Chena Slough||Fairbanks||13 miles||Sediment||Sediment||Urban Runoff|
|IN||5||40402-010||Crooked Creek Bonanza Crooked Deadwood Ketchem Mammoth Mastodon Porcupine||North of Fairbanks||77 miles||Turbidity||Turbidity||Placer Mining|
|IN||5||40509-001||Goldstream Creek||Fairbanks||70 miles||Turbidity||Turbidity||Placer Mining|
|IN||5||30501-002||Kuskokwim River||Red Devil||1,000 feet, 900 feet down river and 100 feet upriver from mouth of Red Devil Creek||Toxic & Other Deleterious Organic and Inorganic Substances||Metals – Antimony, Arsenic, Mercury||Mining|
|IN||5||40506-003||Noyes Slough||Fairbanks||7 miles||Sediment, Petroleum Hydrocarbons, Oil & Grease||Sediment, Petroleum Products||Urban Runoff|
|IN||5||30501-002||Red Devil Creek||Red Devil||0.5 mile of creek||Toxic & Other Deleterious Organic and Inorganic Substances||Metals – Antimony, Arsenic, Mercury||Inactive Mine|
|IN||5||40510-101||Slate Creek||Denali National Park||2.5 miles||Turbidity||Turbidity||Mining|
|SC||5||20505-401||Big Lake||Wasilla||1,250 acres||Petroleum Hydrocarbons||Total Aromatic Hydrocarbons (TAH)||Motorized watercraft|
|SC||5||30101-503||Cold Bay||King Cove, Alaska Peninsula||0.01 acre||Petroleum Hydrocarbons, Oil & Grease||Petroleum Products||Military, Fuel Storage|
|SC||5||20505-001||Cottonwood Creek||Wasilla||7 miles||Fecal Coliform Bacteria||Fecal Coliform Bacteria||Urban Runoff, Urban Development|
|SC||5||30102-606||Dutch Harbor||Unalaska Island||0.5 acre||Petroleum Hydrocarbons, Oil & Grease||Petroleum Products||Industrial, Urban Runoff|
|SC||5||30203-001||Egegik River||Egegik||0.25 mile||Petroleum Hydrocarbons, Oil & Grease||Petroleum Products||Spills, Fuel Tanks, Underground Fuel Tanks|
|SC||5||20201-401||Eyak Lake||Cordova||50 feet of shoreline||Petroleum Hydrocarbons, Oil & Grease||Petroleum Products, Petroleum Contamination, Sheen||Above Ground Storage Tanks, Spills|
|SC||5||20401-412||Hood/Spenard Lake||Anchorage||307 acres||Dissolved Gas||Low Dissolved Oxygen||Urban Runoff, Industrial|
|SC||5||30102-602||Iliuliuk Harbor||Dutch Harbor||1.4 acres||Petroleum Hydrocarbons, Oil & Grease||Petroleum Products||Urban Runoff|
|SC||5||20402-001||Matanuska River||Palmer||1/2 mile||Residues||Debris||Landfill|
|SC||5||30101-502||Popof Strait||East Aleutians Borough||5 miles||Residues||Seafood Waste Residue||Seafood Processor|
|SC||5||30102-409||Red Lake Anton Road Ponds||Kodiak||2.0 acres||Toxic & Other Deleterious Organic and Inorganic Substances||Metals – Iron, Manganese||Urban Runoff|
|SC||5||20401-020||Ship Creek Glenn Hwy. Bridge. Down to Mouth||Anchorage||11 miles, Glenn Hwy. Bridge. Down to Mouth||Petroleum Hydrocarbons, Oil & Grease||Petroleum Products||Urban Runoff|
|SE||5||10203-002||Katlian River||N. of Sitka, Baranof Island||4.5 miles||Sediment, Turbidity||Sediment, Turbidity||Timber Harvest|
|SE||5||10103-504||Salt Chuck Bay||Kasaan Area, Prince of Wales Island||0.03 square miles||Toxic & Other Deleterious Organic and Inorganic Substances||Metals – Copper|
|SE||5||10303-601||Skagway Harbor||Skagway||1.0 acre||Toxic & Other Deleterious Organic and Inorganic Substances||Metals – Cadmium, Copper, Lead, Mercury, Zinc||Industrial|
|SE||5||10103-010||Unnamed Creek, Sweetwater Lake, USFS 3030 Road, ADF&G Stream 3027 (Stream 3)||Prince of Wales Island||0.4 mile||Toxic & Other Deleterious Organic and Inorganic Substances||Metals – Aluminum, Cadmium, Copper, Iron||Road Construction|
|SE||5||10103-012||Unnamed Creek, Sweetwater Lake, USFS 3030 Road, ADF&G Stream 3021 (Stream 6)||Prince of Wales Island||1.14 mile||Toxic & Other Deleterious Organic and Inorganic Substances, Dissolved Inorganic Substances||Metals – Aluminum, Cadmium, Copper, Iron, Manganese, Sulfate||Road Construction|
|SE||5||10103-013||Unnamed Creek, Sweetwater Lake, USFS 3030 Road, ADF&G Stream 3019 tributary (Stream 7)||Prince of Wales Island||0.3 mile||Toxic & Other Deleterious Organic and Inorganic Substances||Metals – Aluminum, Cadmium, Copper, Iron, Manganese||Road Construction|
|SE||5||10103-014||Unnamed Creek, Sweetwater Lake, USFS 3030 Road, ADF&G Stream 3019 (Stream 8)||Prince of Wales Island||0.3 mile||Toxic & Other Deleterious Organic and Inorganic Substances||Metals – Cadmium, Copper, Iron, Manganese, Nickel, Zinc||Road Construction|
|SE||5||10103-015||Unnamed Creek, Sweetwater Lake, USFS 3030 Road, ADF&G Stream 3017 (Stream 9)||Prince of Wales Island||0.8 mile||Toxic & Other Deleterious Organic and Inorganic Substances, Dissolved Inorganic Substances||Metals – Aluminum, Cadmium, Copper, Iron, Manganese, Nickel, Zinc, Sulfate||Road Construction|
Total Maximum Daily Loads (TMDLs) are required actions for polluted waters found on the Alaska 's 303(d) List of Impaired Waters. DEC lists these waters in Category 5 of the Alaska Integrated Water Quality Monitoring and Assessment Report, which encompasses the 303(d) list. The waterbodies shown here have an approved TMDL in place.
A TMDL, or other approved management mechanism, are required for a polluted waterbody to be removed from the 303(d) list. A waterbody can also be removed if there are assurances that pollution controls are in place, or will be in place that result in attainment of water quality standards. These 'assurances' include other pollution recovery plans such as a waterbody recovery plan, Memorandum of Understanding (MOU), Record of Decision (ROD) or a similar type of hazardous substance clean-up approved by DEC's Contaminated Sites Program. These waters are shown in Category 4b of the Integrated Report. There are also instances where there is no true plan but general assurances that controls are being implemented and only require some follow-up implementation or effectiveness monitoring (as opposed to in-stream monitoring). These files are available for viewing and printing in PDF format.
|Akutan Harbor||Southwest||TMDL||EPA||Dissolved Oxygen|
|Big Lake||Southcentral||TMDL||DEC||Petroleum Hydrocarbons, Oil and Grease|
|Upper Birch Cr.||Interior||TMDL||EPA||Turbidity and Sediment|
|Chester Creek, University Lake, Westchester Lagoon||Southcentral||TMDL||DEC||Fecal Coliform Bacteria|
|Campbell Creek/Lake||Southcentral||TMDL||DEC||Fecal Coliform Bacteria|
|Cottonwood Creek, Wasilla||Southcentral||TMDL||DEC||Fecal Coliform Bacteria|
|Duck Creek||Southeast||TMDL||EPA||Fecal Coliform Bacteria|
|Duck Creek||Southeast||TMDL||EPA||Dissolved Oxygen and Iron|
|Dutch Harbor||Southwest||TMDL||DEC||Petroleum Hydrocarbons|
|Eagle River||Southcentral||TMDL||Anchorage Water Wastewater Utility||Ammonia,Copper, Lead, Silver, Chlorine|
|Fish Creek, Anchorage||Southcentral||TMDL||DEC||Fecal Coliform Bacteria|
|Furrow Creek||Southcentral||TMDL||DEC||Fecal Coliform Bacteria|
|Garrison Slough||Interior||TMDL||EPA||Poly-Chlorinated Biphenyls|
|Hawk Inlet||Southeast||TMDL||DEC||Metals in Marine Sediments|
|Iliuliuk Harbor||Southwest||TMDL||DEC||Petroleum Hydrocarbons|
|Jewel Lake||Southcentral||TMDL||EPA||Fecal Coliform|
|Klag Bay||Southeast||TMDL||DEC||Toxic and other deleterious organic and inorganic substances|
|Lake Lucille||Southcentral||TMDL||DEC||Dissolved Oxygen|
|Lemon Creek||Southeast||TMDL||DEC||Sediment and Turbidity|
|Little Campbell Creek||Southcentral||TMDL||DEC||Fecal Coliform Bacteria|
|Little Rabbit Creek||Southcentral||TMDL||DEC||Fecal Coliform Bacteria|
|Little Survival Creek||Southcentral||TMDL||DEC||Fecal Coliform Bacteria|
|Noyes Slough||Interior||TMDL||DEC||Petroleum Hydrocarbons, Oil and Grease|
|Pederson Hill Creek||Southeast||TMDL||DEC||Fecal Coliform Bacteria|
|Pullen Creek||Southeast||TMDL||DEC||Toxic and other deleterious organic and inorganic substances|
|Red Lake Anton Road Pond, or Red Lake/Anton Road Pond||Southcentral||TMDL||DEC||Toxic and other deleterious organic and inorganic substances|
|Ship Creek||Southcentral||TMDL||DEC||Fecal Coliform Bacteria|
|Silver Bay||Southeast||TMDL||DEC||Residue and Toxic Substances|
|Skagway Harbor (West & Central)||Southeast||TMDL||DEC||Petroleum Hydrocarbons|
|Slate Creek||Interior||TMDL||DEC||Antimony, Arsenic and Iron|
|South Unalaska Bay||Southwest||TMDL||EPA||Biochemical Oxygen Demand|
|South Unalaska Bay||Southwest||TMDL||EPA||Settleable Solid Residues|
|Swan Lake||Southeast||TMDL||DEC||Debris and Solid Waste|
|Thorne Bay||Southeast||TMDL||DEC||Wood Residues|
|Udagak Bay of Beaver Inlet||Southwest||TMDL||DEC||Residues|
|Vanderbilt Creek||Southeast||TMDL||DEC||Sediment and Turbidity|
|Ward Cove||Southeast||TMDL||DEC||Biochemical Oxygen Demand|
|Ward Cove||Southeast||TMDL||DEC||Residue and Dissolved Oxygen|
Proposed Alaska TMDL completion date schedule (reflects 2014/2016 Integrated Report)
Note: During TMDL development, it may be determined that a TMDL is not needed if the waterbody has recovered or adequate restoration actions are ongoing.
Alaska’s approved and final TMDLs can be found on the Approved TMDLs tab.
|Crooked Creek Watershed (partial)||Interior/North Slope||2018|
|Crooked Creek Watershed (partial)||Interior/North Slope||2019|
|Stampede Creek||Interior/North Slope||2020|
|Salt Chuck Bay||Southeast||2022|
|Little Susitna River||Southcentral||2022|
|Kuskokwin River (Red Devil)||Interior/North Slope||2024|
|Red Devil Creek||Interior/North Slope||2025|
|Interior/Northern/North Slope||Chandra McGee||(907) firstname.lastname@example.org|
|Southcentral/Kenai||Jeanne Swartz||(907) email@example.com|
FAQs about Total Maximum Daily Load (TMDL)
Click question to show answer.
- Just what is a TMDL?
- A TMDL identifies the amount of a pollutant that a waterbody can assimilate and maintain compliance with water quality standards. TMDLs include an appropriate margin of safety and identify the level of management needed to reduce pollutant inputs to a level (or “load”) that allows a waterbody to meet its designated uses.
A TMDL is composed of individual wasteload allocations (WLAs) for point sources and load allocations (LAs) for nonpoint sources and background loads. In addition, the TMDL must include a margin of safety (MOS), either implicitly or explicitly, that accounts for the uncertainty in the relationship between pollutant loads and the quality of the receiving waterbody.
- What are water quality standards and designated uses?
- Water Quality Standards are either numeric or narrative standards used to define the goals for a waterbody by designating its uses, setting criteria to protect those uses, and establishing provisions to protect waterbodies from pollutants. Designated uses specify appropriate water uses to be achieved and protected. Appropriate uses are identified by taking into consideration the use and value of the water body for public water supply, for protection of fish, shellfish, and wildlife, and for recreational, agricultural, industrial, and navigational purposes. In designating uses for a water body, States and Tribes examine the suitability of a water body for the uses based on the physical, chemical, and biological characteristics of the water body, its geographical setting and scenic qualities, and economic considerations.
- How are TMDLs implemented?
- The mechanisms used to address water quality problems after the TMDL is developed can include a combination of best management practices (BMPs) for nonpoint sources and/or effluent limits and monitoring required through Alaska Pollutant Discharge Elimination System (APDES) permits. Municipalities and other stakeholders have the opportunity to apply for grants to assist in funding projects to help reduce water pollution. Using a TMDL approach for water bodies does not replace existing water quality control programs or standard treatment technologies. It provides a framework for evaluating all possible water quality control efforts and promotes closer coordination of local, state, and federal efforts to better guarantee that we collectively meet water quality goals.
- How does a TMDL affect my property?
- A TMDL is not designed to act as a permitting tool but rather as a tool for assessing the various sources of pollution associated with a waterbody that cause the waterbody not to meet Alaska Water Quality Standards. Municipal and State zoning and ordinances apply as they would in any other permitting situation. However, permitting requirements and enforcement may be much stricter for properties adjacent to a TMDL waterbody depending on the type, duration, and extent of development to take place. Point source permits must be consistent with approved TMDLs.
- How is the local community involved in restoring water quality?
- The DEC supports the use of a watershed approach to address nonpoint source pollution. A watershed approach is based on the premise that water quality restoration and protection are best addressed through integrated efforts within a defined geographic area. Municipalities, non-governmental organizations, and other interested partners, have the ability to develop waterbody restoration plans and apply for funding to implement such programs. On an annual basis DEC looks for partners to address restoration plans through the Alaska Clean Water Actions (ACWA) program.
- What happens if the TMDL plan doesn’t restore water quality?
- If monitoring indicates that water quality standards are not being achieved after a plan is approved, DEC has the ability to conduct a formal evaluation to determine if:
- The implementation of new and improved management practices are necessary;
- Water quality is improving but more time is needed to comply with water quality standards; or
- Revisions to the plan are necessary to meet water quality standards.
- How can the public comment on the TMDL?
- Alaska has a 30-day public comment period in which anyone is welcome to comment on the TMDL. During this period, news releases are sent out and the copies of the TMDL and public notice are posted on the DEC’s TMDL website. DEC will respond to comments in a “Response to Comments” document prior to submitting the TMDL to EPA for approval.
|NPS Section Manager/TMDLs||Cindy Gilder||(907) 269-3066||Cindy.Gilder@alaska.gov|
|Alaska's 303(d) List of Impaired Waters||Drew Grant||(907) 465-5304||Drew.Grant@alaska.gov|
|Interior/Northern||Chandra McGee||(907) firstname.lastname@example.org|
|Southeast||Gretchen Pikul||(907) email@example.com|
|Southcentral||Jeanne Swartz||(907) firstname.lastname@example.org|
|Mat-Su/Southcentral||Laura Eldred||(907) email@example.com|