| snippet:
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Watershed catchment boundaries within which all waterbody segments are listed on the Clean Water Act 303(d) list. All stream segments or lines within these boundaries have been assessed in the Integrated Report process. |
| summary:
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Watershed catchment boundaries within which all waterbody segments are listed on the Clean Water Act 303(d) list. All stream segments or lines within these boundaries have been assessed in the Integrated Report process. |
| extent:
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[[-124.461671471893,38.1775458396223],[-121.15909331903,42.0439392876176]] |
| accessInformation:
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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. |
| thumbnail:
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thumbnail/thumbnail.png |
| maxScale:
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1.7976931348623157E308 |
| typeKeywords:
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["ArcGIS","ArcGIS Server","Data","Feature Access","Feature Service","providerSDS","Service"] |
| description:
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<p>This feature layer contains polygons of the catchment, or
area that drains to the water body, that contains waterbody segments 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.</p>
<p><b>Aluminum</b></p>
<p>Aluminum is a naturally occurring element and is the
most common in the earth’s crust. Aluminum is considered non-essential to
aquatic life since they do not need it to function. However, elevated levels of
aluminum can affect some species ability to regulate ions which can affect
essential functions like breathing and can lead to death in fish species.</p>
<p><b>Arsenic</b></p>
<p>Arsenic is a naturally occurring semi-metallic chemical that
has been linked to several cancers. These include bladder, lungs, skin, kidney,
nasal passages, liver, and prostate. Non-carcinogenic effects of arsenic
include skin lesions, cardiovascular disease, and cognitive impairment.</p>
<p><b>Benthic Community Effects</b></p>
<p>Benthic macroinvertebrates include aquatic insect larvae,
crustaceans, mollusks, and worms that live at the bottom of rivers and streams.
Because they are ubiquitous, relatively stationary, and diverse, assessing
types and numbers provides a range of responses to environmental pressures. Biological
populations and/or communities are compared to reference sites and may exhibit
degradation due to water quality or sediment concentrations. Water quality pollutants
include chemical concentrations, temperature, dissolved oxygen, and trash.</p>
<p><b>Dissolved Oxygen</b></p>
<p>Dissolved oxygen is the amount of oxygen that is present in
water. Bodies of water receive dissolved oxygen from the atmosphere and aquatic
plants. Faster waters typically hold more dissolved oxygen than still waters
like a pond. Dissolved oxygen levels must meet a certain threshold for aquatic
organisms to survive.</p>
<p><b>Indicator Bacteria</b></p>
<p>Indicator bacteria are used to measure the potential
presence of fecal material and associated fecal pathogens. They are bacteria
that are normally prevalent in the feces of warm-blooded animals including
humans, farm animals, pets, and wildlife. High presence of indicator bacteria
show that high levels of fecal matter may be in the waterbody, increasing the
likelihood of human illness during water contact recreation.</p>
<p><b>Mercury</b></p>
<p>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.</p>
<p><b>Nutrients</b></p>
<p>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.</p>
<p><b>pH</b></p>
<p>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. </p>
<p><b>Sediment</b></p>
<p>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.</p>
<p><b>Temperature</b></p>
<p>Higher than ideal temperatures can cause issues for aquatic
life in cold water habitats. Warmer waters also have decreased capacity for
dissolved oxygen. Metals and other toxins are also more easily dissolved into
warmer waters and can increase toxicity of some substances to aquatic
organisms.</p><p><br /></p><p style='margin-bottom:0in;'><b>General Point of Contact: </b></p>
<p style='margin-bottom:0in;'><b>Lance Le, Water Resource
Control Engineer </b></p>
<p style='margin-bottom:0in;'><b>Email:
Lance.Le@waterboards.ca.gov</b></p>
<p style='margin-bottom:0in;'> </p>
<p style='margin-bottom:0in;'><b>Integrated Report
Contact: </b></p>
<p style='margin-bottom:0in;'><b>Mary Bartholomew, Environmental
Scientist</b></p>
<p style='margin-bottom:0in;'><b>Email: Mary.Bartholomew@waterboards.ca.gov</b></p>
<p><b> </b></p>
<p><b>Description Sources:</b></p>
<p style='margin-bottom:0in;'><a href='https://www.epa.gov/wqc' target='_blank'>https://www.epa.gov/wqc</a></p>
<p style='margin-bottom:0in;'><a href='https://www.epa.gov/wqc' target='_blank'>https://www.waterboards.ca.gov/plans_policies/</a></p>
<p style='margin-bottom:0in;'><a href='https://www.waterboards.ca.gov/water_issues/programs/water_quality_assessment/' target='_blank'>https://www.waterboards.ca.gov/water_issues/programs/water_quality_assessment/</a></p>
<p><br /></p> |
| licenseInfo:
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This geospatial data layer is for reference and guidance purposes only and is not a binding legal document to be used for legal determinations.
The data provided in the map may contain errors, inconsistencies, or may not in all cases appropriately represent the current status of fully
appropriated streams in California. The data are subject to change at any time and should not be used as the sole source for decision making. By using this data, the user acknowledges all limitations of the data and agrees to accept all errors stemming from its use |
| catalogPath:
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| title:
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Impaired Catchments |
| type:
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Feature Service |
| url:
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|
| tags:
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["Water","California","SWRCB","State Water Resources Control Board","North Coast","Impaired Waters","Water Quality","Water Pollution"] |
| culture:
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en-US |
| portalUrl:
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|
| name:
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Impaired_Catchments |
| guid:
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02E47BE6-F27B-4ED4-802E-27B6DF6B78E7 |
| minScale:
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0 |
| spatialReference:
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NAD_1983_California_Teale_Albers |