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USEPA MyWaters Mapper

EPA MyWATERS Mapper dynamically displays snapshots of EPA Office of Water program data. This version of MyWATERS Mapper depicts the status of NPDES permits for each State; summary information from the Clean Watershed Needs Survey; and water quality assessments. Future versions will include other Office of Water Program Snapshots. MyWATERS Mapper also contains water-related geographic themes such as 12-digit watersheds, the national stream network known as the National Hydrography Dataset, and other water-related map layers. MyWATERS Mapper enables you to create customized maps at national and local scales.

FILE TYPE: link
DATE:02/07/2017
USEPA N-STEPS (Nutrient Scientific Technical Exchange Partnership and Support)

N-STEPS (Nutrient Scientific Technical Exchange Partnership and Support) provides direct support for nutrient criteria development. This site is a "One Stop Shop" for national, regional, and local nutrient criteria developments. The types of assistance available from N-STEPS include: •read questions and responses about the science of nutrient criteria development, as well as implementation questions, •see presentations by state nutrient experts and water quality managers, •participate in webcasts, •participate in nutrient related discussion boards, •view a bulletin board of recent nutrient happenings in other regions as well as at Headquarters, •and download factsheets and guidance documents on nutrient water quality criteria issues such as: ◦Nutrient-algal dynamics, ◦Sampling design for determining ecosystem specific nutrient algal dynamics, ◦Statistical analysis of data to assess nutrient-algal dynamics

FILE TYPE: link
DATE:02/07/2017
USEPA National Aquatic Resource Survey (NARS)

U.S. Environmental Protection Agency, states, and tribes are conducting a series of surveys of the nation's aquatic resources. Often referred to as probability-based surveys, these studies provide nationally consistent and scientifically-defensible assessments of our nation's waters and can be used to track changes in condition over time. Each survey uses standardized field and lab methods and is designed to yield unbiased estimates of the condition of the whole water resource being studied (i.e., rivers and streams, lakes, wetlands, or coastal waters).

FILE TYPE: link
DATE:02/07/2017
USEPA Nitrogen and Phosphorus Data Access Tool (NPDAT)

As described in EPA's March 16, 2011 memorandum, "Working Effectively in Partnership with States to Address Phosphorus and Nitrogen Pollution through Use of a Framework for State Nutrient Reductions," (PDF) (6 pp, 346.6K) EPA will work collaboratively with interested and willing states, other partners, and stakeholders to help states develop effective statewide strategies for reducing loadings of nitrogen and phosphorus while they continue developing numeric criteria for these pollutants. The first elements in EPA's recommended framework are to: 1) prioritize watersheds on a statewide basis for nitrogen and phosphorus loading reductions and 2) set watershed load reduction goals based upon best available information. To support states, other partners, and stakeholders in this important work, EPA has developed this data access tool, providing downloadable data layers and key information on the following: ◦the extent and magnitude of nitrogen and phosphorus pollution in our Nation's waters; ◦water quality problems or potential problems related to this pollution; and ◦potential sources of these pollutants. Where available, the data layers in this data access tool are national in scope. In some cases, data sets are available only in the Mississippi/Atchafalaya River Basin (e.g., US Geological Survey (USGS) estimated loadings of nitrogen and phosphorus pollution) or for a smaller area or region. This data access tool and data layers represent the best information currently available, and by making these data layers viewable and downloadable through this data access tool, EPA does not draw any conclusions or make any recommendations or determinations as to sources of nitrogen or phosphorus to our Nation's waters.

FILE TYPE: link
DATE:02/07/2017
USEPA Nonpoint Source (NPS) Outreach Toolbox

The Nonpoint Source (NPS) Outreach Toolbox is intended for use by state and local agencies and other organizations interested in educating the public on nonpoint source pollution or stormwater runoff. The Toolbox contains a variety of resources to help develop an effective and targeted outreach campaign. Includes targeted topics for general stormwater and storm drain awareness, lawn and garden care, pet care, septic system care, motor vehicle care, and household chemicals and waste. TV, radio, and print ads and other outreach products to increase awareness or change behaviors; Logos, slogans, and mascots; surveys and evaluations; and media campaigns.

FILE TYPE: link
DATE:02/07/2017
USEPA NPDAT - Active, Nutrient-Related Clean Water Act Section 319 Projects

These EPA data provide information about the nutrient-related Clean Water Act Section 319 projects currently underway that have reported on load reductions for nutrients. Active projects do not include those that are marked as discontinued, never initiated, completed, or accepted by EPA. Nutrients include the following pollutants: algal growth/chlorophyll, ammonia, Biochemical Oxygen Demand (BOD), dissolved oxygen (low), nitrate, nitrogen, nutrients, phosphorus, sedimentation-siltation, suspended solids, Total Kjeldahl Nitrogen, and phosphate.

FILE TYPE: link
DATE:02/07/2017
USEPA NPDAT - Facilities Likely to Discharge Nitrogen/Phosphorus (N/P) to Water data layer

A web-based data layer in EPA NPDAT Tool. This layer provides information on nitrogen and phosphorus discharges from 2010 facility monitoring reports with corresponding nitrogen and phosphorus limits from EPA's Discharge Monitoring Report (DMR) Pollutant Loading Tool

FILE TYPE: link
DATE:02/07/2017
USEPA NPDAT - National Aquatic Resource Survey (NARS) N/P Values

These values, derived from EPA's NARS provide nitrogen and phosphorus pollutant levels statistically associated with degraded biological condition and may indicate the potential for biological community impacts at or near a monitoring site. Values for streams and for lakes to TN and TP.

FILE TYPE: link
DATE:02/07/2017
USEPA NPDAT - National Land Cover Dataset (NLCD)

These USGS data (2006) provide a comprehensive look at land use. This layer provides states with an estimated breakdown of the percentage of distinct forms of developed (urban), crop and pastureland (agricultural), and forest lands, and will help states focus the right practices on the land in prioritized watersheds.

FILE TYPE: link
DATE:02/07/2017
USEPA NPDAT - National Pollutant Discharge Elimination System (NPDES) Concentrated Animal Feeding Op

EPA data indicate locations of agricultural operations where animals are kept and raised in confined situations. CAFOs generally congregate animals, feed, manure and urine, dead animals, and production operations on a small land area. Feed is brought to the animals rather than the animals grazing or otherwise seeking feed in pastures, fields, or on rangeland. Animal waste and wastewater can enter waterbodies from spills or breaks of waste storage structures (due to accidents or excessive rain), and non-agricultural application of manure to crop land.

FILE TYPE: link
DATE:02/07/2017