Hosted/Impaired_Bays_Estuaries_Lakes_Reservoirs (FeatureServer)

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All Layers and Tables

Has Versioned Data: false

MaxRecordCount: 2000

Supported Query Formats: JSON

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Layers:

Description: This feature layer contains polygons of bays, estuaries, lakes and reservoirs where water quality objectives are not being attained. The waterbodies in these catchments are listed under section 303(d) of the Clean Water Act as impaired due to a pollutant. Dioxin Toxic Equivalents (DTE) Polychlorinated biphenyls are a group of man-made organic chemicals consisting of carbon, hydrogen and chlorine atoms, with the number of chlorine atoms determining their chemical and physical properties as well as their toxicity. They have been shown to cause cancer in animals as well as a number of serious non-cancer health effects in animals, including: effects on the immune system, reproductive system, nervous system, endocrine system and other health effects. Invasive Species Aquatic invasive species (AIS) are plants, animals or disease agents that are not native to an ecosystem. They threaten native ecosystems by outcompeting native species and/or native species may lack defense mechanisms if preyed upon. They may also affect human systems by impacting fisheries productivity, undermining water delivery infrastructure, and reducing ecosystem services. Mercury Mercury often enters waterbodies from air sources like coal-fired power plants whose particulates settle into nearby waters or from legacy mining operations. Improper handling and disposal of products containing mercury could also release the chemical into the air and water. When a waterbody is impaired for mercury, mercury can bioconcentrate in fish and other aquatic organisms. Their consumption poses a human health risk, particularly if the chemical form is methylmercury, which causes a variety of severe human illnesses. Nutrients Nutrients such as nitrogen and phosphorus are essential for plant growth and are fertilizer components. Excess nutrients, such as from agricultural runoff, can affect dissolved oxygen in waterbodies by accelerating the growth of algae and aquatic plants. The subsequent decay of these organic materials quickly deplete dissolved oxygen, harming aquatic life and habitat. pH pH is an expression of hydrogen ion concentration in water. Low pH refers to acidic solutions, while high pH refers to basic solutions. The pH of a water body can alter the chemical state of many pollutants, which can increase the exposure of toxic metals and nutrients to aquatic plants and animals. Polychlorinated biphenyls (PCBs) Polychlorinated biphenyls are a group of man-made organic chemicals consisting of carbon, hydrogen and chlorine atoms, with the number of chlorine atoms determining their chemical and physical properties as well as their toxicity. They have been shown to cause cancer in animals as well as a number of serious non-cancer health effects in animals, including: effects on the immune system, reproductive system, nervous system, endocrine system and other health effects. Sediment Sediment pollution refers to suspended organic and inorganic matter that is largely contributed by erosion of soil. Sediment pollution can clog aquatic organism gills and impact their life cycle negatively. Sediment loads can also increase the cost of drinking water and can result in odor and taste problems. Additionally, toxic chemicals become attached to sediment particles that may be released into the environment. General Point of Contact: Lance Le, Water Resource Control Engineer Email: Lance.Le@waterboards.ca.gov Integrated Report Contact: Mary Bartholomew, Environmental Scientist Email: Mary.Bartholomew@waterboards.ca.gov Description Sources: https://www.epa.gov/wqc https://www.waterboards.ca.gov/plans_policies/ https://www.waterboards.ca.gov/water_issues/programs/water_quality_assessment/

Service Item Id: 274b1a9aa14d415b9456074939857262

Copyright Text: These layers were generated by North Coast Regional Water Quality Control Board staff Mary Bartholomew, Darby Radley, Lance Le and Megan Kownurko, a Corpsmember from the California Conservation Corps Watershed Stewards Program in partnership with AmeriCorps.

Spatial Reference: 3310 (3310) LatestVCSWkid(0)

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Full Extent:

Units: esriMeters

Document Info:

N/A Enable Z Defaults: true

Supports ApplyEdits With Global Ids: false

Supports Dynamic Layers: false

Child Resources: Info Relationships

Supported Operations: Query Query Contingent Values Append Get Estimates