Data and Tools

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.

Addressing Water Quality Effects from Hydrologic Alteration

EPA has clarified that pollution from hydrologic alteration of rivers, streams, lakes, and estuaries affects water quality.

Photo Slideshow

Photo slideshow of images from the USS Lead cleanup.

NHDPlus Guam Data (Vector Processing Unit 22g)

NHDPlus data for the Guam vector processing unit.

NHDPlus NLCD 2011 Extension Files

NHDPlusV2 NLCD 2011 extension data components are packaged into compressed files by vector processing unit.

NHDPlus Simplified Catchment Extension Files

NHDPlusV2 simplified catchment data components are packaged into compressed files by vector processing unit.

NHDPlus National Data

NHDPlus data which covers the continental U.S.

WATERS Tools

A listing of tools derived from WATERS resources.

NHDPlus Accumulation Extension Files

NHDPlusV2 accumulation extension data components are packaged into compressed files by vector processing unit.

NHDPlus Global Data

A group of datasets primarily used by the NHDPlus Version 2 Tools.

NHDPlus Mid-Atlantic Data (Vector Processing Unit 02)

NHDPlus data for the Mid-Atlantic vector processing unit.

NHDPlus Northeast Data (Vector Processing Unit 01)

NHDPlus data for the Northeast vector processing unit.

NHDPlus South Atlantic West Data (Vector Processing Unit 03W)

NHDPlus data for the South Atlantic West vector processing unit.

NHDPlus Texas Data (Vector Processing Unit 12)

NHDPlus data for the Texas vector processing unit.

NHDPlus Lower Missouri Data (Vector Processing Unit 10L)

NHDPlus data for the Lower Missouri vector processing unit.

NHDPlus Upper Missouri Data (Vector Processing Unit 10U)

NHDPlus data for the Upper Missouri vector processing unit.

NHDPlus Tennessee Data (Vector Processing Unit 06)

NHDPlus data for the Tennessee vector processing unit.

NHDPlus South Atlantic South Data (Vector Processing Unit 03S)

NHDPlus data for the South Atlantic South vector processing unit.

NHDPlus Ark-Red-White Data (Vector Processing Unit 11)

NHDPlus data for the Arkansas - Red - White Rivers vector processing unit.

NHDPlus Lower Colorado Data (Vector Processing Unit 15)

NHDPlus data for the Lower Colorado vector processing unit.