Sorry, you need to enable JavaScript to visit this website.



OCTO is aware of the global issue with CrowdStrike’s update impacting Windows servers and computers. CrowdStrike has identified the issue and a fix. We are supporting District agencies to ensure operations continue. At this time, District operations are not experiencing major impacts.


Total Maximum Daily Load (TMDL) Documents

<< Back to TMDL home page

TMDLs for the District's Water Bodies 

Below are links to Total Maximum Daily Load (TMDL) studies for the District and regional TMDLs in which the District is included.

For a general introduction to the District’s TMDLs, please see the TMDL home page.

Anacostia Watershed

Potomac Watershed

Rock Creek Watershed

Regional TMDLs

Reference Documents