For many years, the District has been collecting precipitation and stream flow data from a network of over 90 rain and steam gauges throughout the county. The data is used to estimate potential flood conditions.

The District has developed a web-based geographic information system (GIS) and supporting database to provide the public with access to our detailed data on mean annual precipitation, slope, and hydrologic soil group. You can download this data and use it with GIS software to perform hydrologic overlay computations.