Data and Tools
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HSCTM2D
Hydrodynamic, Sediment, and Contaminant Transport Model, a finite element modeling system for simulating two-dimensional, vertically-integrated, surface water flow
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HSCTM2D Release Notes
Release notes for Hydrodynamic, Sediment, and Contaminant Transport Model, a finite element modeling system for simulating two-dimensional, vertically-integrated, surface water flow
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A Exercise in Using PEST to Calibrate a Groundwater Model
Exercise to gain experience in using the comprehensive model postprocessing functionality available through Time Series PROCessor (TSPROC) & PEST in calibrating a HSPF model.
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EPA’s Response Equipment
EPA maintains a variety of equipment to respond to hazardous substance emergencies such as releases or oil spills regardless of their nature, size, or location. This include ASPECT, PHILIS, Equipment Module (EM), and personal protective equipment.
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The Geography of WATERS
WATERS Geography
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Analysis of the Final Repeal of the Mercury and Air Toxics Standards Amendments
IPM analyses of the Proposed MATS Risk and Technology Review (RTR)
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2025 Reference Case
This area provides information and documentation on EPA’s power sector modeling platform v6, including the associated input data and modeling assumptions, outputs, and documentation.
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Watershed Index Online
A comparative analysis tool for comparing watershed characteristics within user-defined geographic areas to support their strategic planning decisions.
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Ambient Water Quality Monitoring System
This page describes what the ambient water quality monitoring system is, how it functions, and what a user can do with it.
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Support for STOrage and RETrieval and Water Quality Exchange Data Owners
This page contains numerous resources relevant to STORET and WQX data owners.
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User's Manual for CORMX
This user’s manual gives a comprehensive description of CORMIX system and includes guidance on multiple facets of the system.
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Shell Deer Park Spreadsheet
This is the spreadsheet to the shell deer park consent decree appendix 2.4
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CIMC - How to Download Data
This page explains how to use Cleanups in My Community to download data into a spreadsheet format.
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About the Automotive Trends Data
About the data for the light-duty vehicle carbon dioxide and fuel economy trends report.
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Explore the Automotive Trends Data
Explore and download summary data with interactive figures and tables for the automotive trends report.
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Data for the Automotive Trends Report
Data for the light-duty vehicles, including EPA's criteria pollutant and GHG standards.
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Download the Automotive Trends Report
Download the light-duty vehicle carbon dioxide and fuel economy trends report.
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Introduction to the Automotive Trends Report
Introductory information for light-duty vehicle greenhouse gas (GHG) emissions, fuel economy, technology data, and auto manufacturers' performance in meeting EPA's GHG emissions standards.
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Highlights of the Automotive Trends Report
Highlights of the light-duty vehicle carbon dioxide and fuel economy trends report.
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Ecological Spray Drift Buffer Reduction Calculator
EPA created a Spray Drift Mitigation Calculator to assist applicators calculate spray drift buffers as required on pesticide product labeling. Ecological spray drift buffers (if any) are included in the use directions on pesticide labeling.