New to CAST?

Register to create and edit scenarios for reducing nitrogen, phosphorus, and sediment with varying best management practices to streamline environmental planning. Registration also includes access to additional data, tools and resources including CAST's monthly newsletter.

Register

CAST is back online after successful updates. For those users who access NEIEN, the NEIEN node at the Bay Program is still being worked on and remains temporarily offline. We apologize for the inconvenience.


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.

Learn More

Map Tools & Spatial Data

View geographical information and shapefiles.

Learn More

Costs

Download BMP costs data and view cost profiles for each state and Chesapeake Bay Watershed.

Learn More

Track Progress

View helpful information on verification, river trends, how to submit progress data via NEIEN, and modeling Federal facilities.

Track Progress