Peterson Stormwater Detention Dam dam
Peterson Stormwater Detention Dam
Peterson Stormwater Detention Dam, also known as Peterson Pond Dam, is a vital structure located in King County, Washington, designed for flood risk reduction and recreation purposes. Managed by the local government, this earth-type dam stands at a hydraulic height of 16 feet and a structural height of 14 feet, with a storage capacity of 90 acre-feet and a normal storage level of 60 acre-feet. Completed in 1988, the dam is situated on Evans Creek, providing crucial water resource management in the region.
With a hazard potential rated as high and a fair condition assessment as of June 2015, Peterson Stormwater Detention Dam plays a crucial role in mitigating flood risks and ensuring public safety. The dam covers a surface area of 10.8 acres and serves a drainage area of 1.25 square miles, with a maximum discharge capacity of 140 cubic feet per second. Despite its age, the dam undergoes regular inspections every 5 years to ensure its structural integrity and functionality.
The dam's location in Congressional District 01, Washington, under the jurisdiction of the Washington Department of Ecology, highlights its importance in water resource management and climate resilience efforts. With its strategic position on Evans Creek and its significant storage capacity, Peterson Stormwater Detention Dam stands as a key infrastructure for flood control and recreational activities, contributing to the overall environmental sustainability and water security in the region.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Peterson Stormwater Detention Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Snoqualmie River Near Carnation | 908 cfs | → |
| Issaquah Creek Near Mouth Near Issaquah | 62 cfs | → |
| Mercer Creek Near Bellevue | 12 cfs | → |
| Tolt River Near Carnation | 239 cfs | → |
| Raging River Near Fall City | 35 cfs | → |
| Sf Tolt River Bl Regulating Basin Nr Carnation | 77 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Peterson Stormwater Detention Dam.
Boat launches
- West Lake Sammamish Parkway Northeast Redmond
- Northeast Tolt Hill Road 30348-30762, Carnation
- Sammamish River Trail Redmond
- Lake Marcel Community Park
- Lake Langlois Road Northeast King County
- I 90 Trail Bellevue
Paddle runs
- Snoqualmie Falls To Plum's Landing
- Confluence With Taylor River To Confluence With North Fork Snoqualmie River
- Wagner Bridge To Confluence With Middle Fork Snoqualmie River
- Confluence With Troublesome Creek To Confluence With South Fork Skykomish River
- Confluence Of Tye And Foss Rivers To Gold Bar
- Alpine Lakes Wilderness Boundary To Quartz Creek Road
Track Peterson Stormwater Detention Dam in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Peterson Stormwater Detention Dam
Where does the data for Peterson Stormwater Detention Dam come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the High hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Peterson Stormwater Detention Dam.