The following documents are drafts of select Contra Costa County Flood Control & Water Conservation District (FC District) standards that are in review. They contain pertinent and useful information, but could contain technical or typographical errors. Please contact Mark Boucher if you find an error that you want to report.
HEC-HMS Guidance 2015-08-26(PDF - 3621 KB) -
Latest revisions: Comments on Loss and Soil Surface methods to simplify modeling. Minor edits and and additional comments regarding HEC-HMS v3.5 and 4.0.
Further information on the parameters used in the FC District's unit hydrograph method can be found under “Hydrology Requests” in the left menu.
HMS Template Model (Draft)
The FC District will soon be making a HEC-HMS model available that is set up to run the FC District's hydrograph method. A draft of this template model can be found through the link below.