Glenhaven Lakes Dam dam
Glenhaven Lakes Dam
Glenhaven Lakes Dam, located in Alger, Washington, is a privately owned earth dam built in 1963 for recreational purposes. The dam stands at a hydraulic height of 14 feet and a structural height of 9 feet, with a length of 360 feet. It holds a maximum storage capacity of 155 acre-feet and covers a surface area of 16 acres, serving the surrounding community for leisure activities.
Managed by the Washington Department of Ecology, the dam is regulated, inspected, and enforced by state authorities to ensure its safety and compliance with regulations. Despite being rated as having a low hazard potential and not yet assessed for condition, the dam provides essential recreational benefits to the area and poses minimal risk to downstream areas. With a drainage area of 1.85 square miles and a normal storage capacity of 125 acre-feet, Glenhaven Lakes Dam remains a key feature in the local landscape.
Surrounded by the scenic Silver Creek and situated in Congressional District 02, Washington, Glenhaven Lakes Dam continues to be a popular destination for water resource and climate enthusiasts. Its rock and soil foundations contribute to its stability, while its proximity to Rick Larsen's district office ensures ongoing support and oversight. As a vital part of the community's recreational infrastructure, the dam plays a crucial role in providing outdoor opportunities for residents and visitors alike.
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 Glenhaven Lakes Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Brannian Creek At S Bay Dr Nr Wickersham | 2 cfs | → |
| Anderson Creek Near Bellingham | 5 cfs | → |
| Olsen Creek Near Bellingham | 3 cfs | → |
| Carpenter Creek At N Shore Drive Nr Bellingham | 1 cfs | → |
| Samish River Near Burlington | 126 cfs | → |
| Sf Nooksack River At Saxon Bridge | 1,170 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Glenhaven Lakes Dam.
Boat launches
- South Bay Drive 3186-3234, Sedro-Woolley
- Chuckanut Drive 3098, Skagit County
- Galbriath Loop Bellingham
- Beach Avenue Whatcom County
- T Avenue 209, Anacortes
- State Route 20 899, Skagit County
Campgrounds
- Northwest Trail Site
- Lizard Lake Camp
- Pine Lake Camp
- Cedar Lake Camp
- Larrabee State Park
- Riverfront Rv Park - Sedro Woolley
Paddle runs
- Fish Hatchery To Confluence With South Fork Nooksack River
- Nooksack Falls Power Plant To Fish Hatchery Near Kendall, Wa
- Headwaters In Ne1/4 Of Sec 23, T37n, R7e To Confluence With Soufh Fork Nooksack River
- Headwaters To Confluence With Bell Creek
- Bell Creek To Mt. Baker-Snoqualmie Nf Boundary
- Douglas Fir Campground To Mt. Baker Highway
Track Glenhaven Lakes 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 Glenhaven Lakes Dam
Where does the data for Glenhaven Lakes 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 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 Glenhaven Lakes Dam.