Waters identified as impaired as well as their associated causes of impairment from the current approved Clean Water Act 303(d) lists submitted by states.

Waters identified as impaired from the current approved Clean Water Act 303(d) lists submitted by states.

Identifies the causes of impairment for assessed waters under the Clean Water Act 305(b) program.

Identifies the sources of impairment for assessed waters under the Clean Water Act 305(b) program. This view can be used for viewing the details at the assessment unit level.

This layer includes 1,054 features indicating all assessed linear water bodies for the combined 2014 and 2016 Integrated Report. Under Section 303(d) of the Clean Water Act, states, territories and authorized tribes are required to develop a list of water quality limited segments. These waters on the list do not meet water quality standards, even after point sources of pollution have installed the minimum required levels of pollution control technology. The Clean Water Act requires that these jurisdictions establish priority rankings for water on the lists and develop action plans, called as Total Maximum Daily Loads (TMDL), to improve water quality. Every two years, the California State Water Resources Control Board submits a report on the State's water quality to the U.S. Environmental Protection Agency pursuant to Section 305(b) of the federal Clean Water Act. The Report provides water quality information to the general public and serves as the basis for U.S. EPA 's National Water Quality Inventory Report to Congress. This dataset includes all linear water body features in California assessed under Sections 303(d) and 305(b) of the Clean Water Act for the combined 2014 and 2016 Integrated Report listing cycle. Each water body is assigned a unique Water Body ID (WBID) number as well as selected associated information (water body name, Regional Water Quality Control Board number, etc.).

This layer includes 1,054 features indicating all assessed linear water bodies for the combined 2014 and 2016 Integrated Report. Under Section 303(d) of the Clean Water Act, states, territories and authorized tribes are required to develop a list of water quality limited segments. These waters on the list do not meet water quality standards, even after point sources of pollution have installed the minimum required levels of pollution control technology. The Clean Water Act requires that these jurisdictions establish priority rankings for water on the lists and develop action plans, called as Total Maximum Daily Loads (TMDL), to improve water quality. Every two years, the California State Water Resources Control Board submits a report on the State's water quality to the U.S. Environmental Protection Agency pursuant to Section 305(b) of the federal Clean Water Act. The Report provides water quality information to the general public and serves as the basis for U.S. EPA 's National Water Quality Inventory Report to Congress. This dataset includes all linear water body features in California assessed under Sections 303(d) and 305(b) of the Clean Water Act for the combined 2014 and 2016 Integrated Report listing cycle. Each water body is assigned a unique Water Body ID (WBID) number as well as selected associated information (water body name, Regional Water Quality Control Board number, etc.).

2006 303d List of Water Quality Limited Segments that: 1) Require Total Maximum Daily Loads (TMDLS), 2) Are being addressed by USEPA approved TMDLs 3) Are being addressed by actions other than TMDLs

2006 303d List of Water Quality Limited Segments that: 1) Require Total Maximum Daily Loads (TMDLS), 2) Are being addressed by USEPA approved TMDLs 3) Are being addressed by actions other than TMDLs

2006 303d List of Water Quality Limited Segments that: 1) Require Total Maximum Daily Loads (TMDLS), 2) Are being addressed by USEPA approved TMDLs 3) Are being addressed by actions other than TMDLs

Arizona 303(d) waterbodies for 2004. These include rivers, streams, creeks, etc. The 303(d) list is a related table to the feature class AZ_303d_04_linear. Arizona's Integrated 305(b) Assessment and 303(d) List describes the status of surface in Arizona in relation to state water quality standards. The table also contains a list of Arizona's impaired surface waters, including a list of surface waters requiring the development of a Total Maximum Daily Load (the 303(d) List). The report fulfills requirements of the federal Clean Water Act sections 305(b) (assessments), 303(d) (impaired water identification), and 314 (status of stream water quality).