Chesapeake Assessment Scenario Tool
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New to CAST?
Rapidly develop scenarios for reducing nitrogen, phosphorus, and sediment with varying best management practices to streamline environmental planning.
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Where To Start
CAST will be taken offline Monday, March 1, 2021 at noon ET for updates. We will minimize the time that CAST is unavailable
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RESOURCES
Develop A Plan
Get answers to your questions about how to use CAST to develop a plan.
Develop A Plan
Source Data
Download data tables including information on load sources and agencies, BMPs, animals, geographic references and delivery factors.
View Source Data
BMPs
View information on best management practices (BMPs) including calculations, a quick reference guide, and protocol and expert panel reports.
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Map Tools & Spatial Data
View geographical information and shapefiles.
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Costs
Download BMP costs data and view cost profiles for each state and Chesapeake Bay Watershed.
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Track Progress
View helpful information on verification, river trends, how to submit progress data via NEIEN, and modeling Federal facilities.
Track Progress