Stream health and monitoring
Stream flow and precipitation data
An important function in stream health is the volume of water and how fast it moves through a stream, creek or river. Increased volumes and flows lead to erosion and loss of habitat (both in-stream and on the banks). Environmental Services monitors stream flow at seven sites and rainfall at eight stations within the county.
- Brezee Creek
- Gee Creek at Abrams Park
- Whipple Creek
- Cougar Creek
- Mill Creek
- Curtin Creek at NE 139th Street
- Lacamas Creek at NE 217th Avenue
- Lacamas Creek at Goodwin Road
- Jones Creek
- Little Washougal River at Blair Road
- Salmon Creek Wastewater Treatement Plant
- Salmon Creek at NE 156th Street
Clark County collects stream flow data at seven sites throughout the county. Clark County Public Utilities monitors three additional locations. Data is available in the following formats:
- Hydrographs depict how average daily flow varies over time in cubic feet per second using a log scale for flow.
- QTables provide the average daily flow values in cubic feet per second and monthly and annual summary statistics
- 15-minute flow tables provide instantaneous flow in cubic feet per second at 15-minute intervals.
Clark County precipitation data organized by watershed is available in the following formats:
- Daily and monthly precipitation graphs depict total daily and monthly precipitation in inches as vertical bars.
- Daily/Monthly and 15-minute precipitation tables provide the daily and monthly total or 15-minute interval accumulated precipitation in hundredths of inches.
Stream flow and rainfall data is presented by water year. A water year begins October 1 and ends September 30 of the next year. The name of the water year is based on the January - September portion of that time period. For example, WY 2007 is from October 1, 2006 through September 30, 2007.
For more information about precipitation data, please contact Ian Wigger at (360) 397-2121 ext. 4282 or email Ian.Wigger@clark.wa.gov.