Data and Tools
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SDAM Desktop Reconnaissance
Helps ensure a successful assessment of a stream by evaluating reach accessibility and setting expectations for conditions that may affect field sampling as well as beginning to compile additional data that may inform determination of streamflow duration.
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Sandbox (staging) vs. Production
Explanation of the differences between Staging and Production.
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Common Health Questions Related to Monochloramine
common health questions related to monochloramine
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MODFLOW Instructional Manual
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Physical Habitat
This page introduces the physical habitat module, when to list physical habitat as a candidate cause, ways to measure physical habitat, simple and detailed conceptual diagrams, and module references and literature reviews.
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EPA-SMCB ESI Phase 1
EPA-SMCB ESI Phase 1
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About Estuary Data Mapper (EDM)
Estuary Data Mapper is a tool for geospatial data discovery, visualization, and data download for any of the approximately 2,000 estuaries and associated watersheds in along the five US coastal regions.
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Troubleshooting RSIG
Remote Sensing Information Gateway, a tool that allows scientists, researchers and decision makers to access a variety of multi-terabyte, environmental datasets and to subset the data and obtain only needed variables, greatly improving the download time.
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Report: Inter-annual Variability of Benthic Macroinvertebrate Communities in the Bonita Peak Mining District
Report on Inter-annual Variability of Benthic Macroinvertebrate Communities in the Bonita Peak Mining District, December 2020
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Upper Animas Mining District: Smelter Map
Map of smelters in the Upper Animas Mining District around Silverton, in San Juan County, Colorado.
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Ecological Risk Assessment
A key part of EPA’s mission is understanding the potential effects of environmental stressors created by human activities. As legislatively mandated, EPA pursues options to manage risks from those stressors to protect the health of the natural environment.
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Multi-criteria Integrated Resource Assessment (MIRA)
MIRA is an approach that facilitates stakeholder engagement for collaborative multi-objective decision making. MIRA is designed to facilitate and support an inclusive, explicit, transparent, iterative learning-based decision process.
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Regional Fish Consumption Screening Levels (Spring 2021)
Regional Screening Level RSL generic table page provides the default RSLs for use by risk assessors in site screening for chemical contaminants for the assessment of human Health.
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Addressing Water Quality Effects from Hydrologic Alteration
EPA has clarified that pollution from hydrologic alteration of rivers, streams, lakes, and estuaries affects water quality.
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Photo Slideshow
Photo slideshow of images from the USS Lead cleanup.
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NHDPlus Guam Data (Vector Processing Unit 22g)
NHDPlus data for the Guam vector processing unit.
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NHDPlus NLCD 2011 Extension Files
NHDPlusV2 NLCD 2011 extension data components are packaged into compressed files by vector processing unit.
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NHDPlus Simplified Catchment Extension Files
NHDPlusV2 simplified catchment data components are packaged into compressed files by vector processing unit.
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NHDPlus National Data
NHDPlus data which covers the continental U.S.
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WATERS Tools
A listing of tools derived from WATERS resources.