Dagger Lake Dam dam
Dagger Lake Dam
Dagger Lake Dam, located in Monroe, Washington, was completed in 1912 and serves as a recreational site with a primary purpose of providing leisure activities for water enthusiasts. The dam, constructed as a Timber Crib type with a structural height of 10 feet and a length of 50 feet, has a storage capacity of 400 acre-feet and covers a surface area of 32 acres. Despite its low hazard potential, the dam is regulated and inspected by the Washington Dept of Ecology to ensure its safety and compliance with state regulations.
Situated on Tr-Mccoy Creek in Snohomish County, Dagger Lake Dam is managed by a private entity and is under the jurisdiction of the state of Washington. With no associated structures and a drainage area of 1.14 square miles, the dam provides a tranquil recreational spot for visitors to enjoy water activities. Although the condition assessment is currently not rated, the dam is deemed to have low hazard potential, highlighting its stable and secure infrastructure.
For water resource and climate enthusiasts, Dagger Lake Dam offers a unique opportunity to explore the intersection of human-made structures and natural landscapes. With its historical significance dating back over a century, the dam stands as a testament to engineering ingenuity and environmental stewardship. As a regulated and inspected site, Dagger Lake Dam serves as a model for responsible water management practices in the region, ensuring the safety and enjoyment of all who visit this picturesque location.
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 Dagger Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Skykomish River Near Gold Bar | 2,150 cfs | → |
| Sultan River Below Powerplant Near Sultan | 307 cfs | → |
| North Fork Tolt River Near Carnation | 68 cfs | → |
| Sf Tolt River Bl Regulating Basin Nr Carnation | 73 cfs | → |
| Tolt River Near Carnation | 202 cfs | → |
| South Fork Tolt River Near Carnation | 67 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Dagger Lake Dam.
Boat launches
- Stevens Pass Highway Sultan
- Ben Howard Road 21101-21283, Monroe
- Tualco Loop Road 17829, Monroe
- High Bridge, Monroe
- Lake Marcel Community Park
- South Shore Road Snohomish County
Campgrounds
Paddle runs
- Confluence Of Tye And Foss Rivers To Gold Bar
- Confluence With Troublesome Creek To Confluence With South Fork Skykomish River
- End Of Usfs Road 63 To Confluence With Troublesome Creek
- Usfs Road 63 To Confluence With North Fork Skykomish River
- Snoqualmie Falls To Plum's Landing
- Headwaters At Outlet Of Blanca Lake To Usfs Road 63
Track Dagger Lake 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 Dagger Lake Dam
Where does the data for Dagger Lake 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 Dagger Lake Dam.