Bellevue Detention Pond 133 dam
Bellevue Detention Pond 133
Bellevue Detention Pond 133, also known as the 148th Avenue Dam Dmp 133, is a crucial flood risk reduction structure located in Bellevue, Washington. Completed in 1983, this earth dam stands at a hydraulic height of 12 feet, with a structural height of 9 feet, and serves the primary purpose of flood risk reduction along Kelsey Creek. With a low hazard potential and not yet rated in terms of condition assessment, this detention pond plays a vital role in managing stormwater and protecting the surrounding area from potential flooding events.
Managed by the local government and regulated by the Washington Department of Ecology, Bellevue Detention Pond 133 is designed to control debris and reduce the risk of flooding in the region. With a storage capacity of 90 acre-feet and a drainage area of 1.9 square miles, this detention pond is equipped to handle a maximum discharge of 36 cubic feet per second. While the structure has not been inspected in recent years, it remains an essential part of the flood management system in King County, Washington.
Despite not having a current condition assessment, Bellevue Detention Pond 133 continues to serve its purpose effectively in reducing flood risks and protecting the community. As part of the flood risk reduction infrastructure in the area, this earth dam plays a critical role in managing stormwater and ensuring the safety and well-being of residents in Bellevue. With its low hazard potential and state-regulated status, this detention pond remains a key component of the region's water resource management efforts.
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 Bellevue Detention Pond 133 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Mercer Creek Near Bellevue | 12 cfs | → |
| Issaquah Creek Near Mouth Near Issaquah | 44 cfs | → |
| Thornton Creek Near Seattle | 41 cfs | → |
| Cedar River At Renton | 339 cfs | → |
| Snoqualmie River Near Carnation | 1,430 cfs | → |
| Duwamish River At Golf Course At Tukwila | 6,700 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Bellevue Detention Pond 133.
Boat launches
- West Lake Sammamish Parkway Northeast Redmond
- I 90 Trail Bellevue
- Sammamish River Trail Redmond
- Mercer Island Boat Launch
- Adams Street Boat Ramp
- Stan Sayres Boat Launch
Campgrounds
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
- Alpine Lakes Wilderness Boundary To Quartz Creek Road
- Quartz Road To Confluence With Middle Fork Snoqualmie River
- Confluence Of Tye And Foss Rivers To Gold Bar
Track Bellevue Detention Pond 133 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 Bellevue Detention Pond 133
Where does the data for Bellevue Detention Pond 133 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 Low 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 Bellevue Detention Pond 133.