Chaplain Lake North Dam dam
Chaplain Lake North Dam
Chaplain Lake North Dam, located in Monroe, Washington, serves as a vital water supply structure for the region. Built in 1940, this earth dam stands at a hydraulic height of 35 feet, with a structural height of 15 feet and a length of 650 feet. The dam has a maximum storage capacity of 18,200 acre-feet and covers a surface area of 450 acres, drawing water from the Tr-Woods Creek for its operations.
Maintained and regulated by the Washington Department of Ecology, Chaplain Lake North Dam is inspected every five years to ensure its structural integrity. With a high hazard potential but a satisfactory condition assessment as of July 2019, the dam plays a crucial role in managing water resources in Snohomish County. Despite its age, the dam continues to meet the region's water supply needs and remains a key component in mitigating the impacts of climate change on local water systems.
As climate change poses increasing challenges to water resources, Chaplain Lake North Dam stands as a testament to the importance of sustainable water management infrastructure. With its role in supplying water to the region and its continued operation under regulatory oversight, the dam serves as a critical asset in ensuring water security for the community. As discussions around climate adaptation and resilience grow, Chaplain Lake North Dam's significance in safeguarding water resources in Snohomish County remains paramount.
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 Chaplain Lake North Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Sultan River Below Diversion Dam Near Sultan | 149 cfs | → |
| Sultan River Below Powerplant Near Sultan | 307 cfs | → |
| Pilchuck River Near Snohomish | 135 cfs | → |
| South Fork Sultan River Near Sultan | 30 cfs | → |
| Skykomish River Near Gold Bar | 2,150 cfs | → |
| Snohomish River Near Monroe | 4,030 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Chaplain Lake North Dam.
Boat launches
- Middle Shore Road 2998, Lake Roesiger
- West Flowing Lake Road 6415, Snohomish
- Panther Lake Road Snohomish County
- Stevens Pass Highway Sultan
- Ben Howard Road 21101-21283, Monroe
- South Shore Road Snohomish County
Campgrounds
- Camp Edward Bsa (Boy Scouts Of America)
- Camp Pigott
- Flowing Lake County Park
- Verlot Campground
- Turlo Campground
- Verlot
Paddle runs
- Headwaters In Ne1/4 Of Sec 14, T29n, R10e To Confluence With Canyon Creek
- Confluence Of Tye And Foss Rivers To Gold Bar
- Confluence With Troublesome Creek To Confluence With South Fork Skykomish River
- Headwaters In Sw1/4 Of Sec 7, T31n, R9e To Boulder River Wilderness Boundary
- Canyon Creek To Confluence With North Fork Stillaguamish River
- End Of Usfs Road 63 To Confluence With Troublesome Creek
Track Chaplain Lake North 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 Chaplain Lake North Dam
Where does the data for Chaplain Lake North 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 Chaplain Lake North Dam.