Diamond Lake Aeration Lagoon No 3 Dam
Diamond Lake Aeration Lagoon No 3
Diamond Lake Aeration Lagoon No 3 in Pend Oreille, Washington, is a public utility managed by the Washington Department of Ecology. This Earth-type dam, completed in 1987, has a hydraulic height of 17 feet and a structural height of 17 feet, with a storage capacity of 61 acre-feet. The lagoon covers an area of 51 acres and is located near the Tr-Little Spokane River-Offstr, within the jurisdiction of the state regulatory agency.
The dam is designed for purposes other than flood control or water supply, with a high hazard potential and a satisfactory condition assessment as of August 2021. The inspection frequency for the facility is every 5 years, and the last inspection was conducted in August 2021. The emergency action plan was last revised in July 1997, and additional risk assessment and management measures are not currently specified for the site.
Water resource and climate enthusiasts interested in the management and regulation of dams in Washington may find Diamond Lake Aeration Lagoon No 3 to be a compelling case study. With its unique design, storage capacity, and environmental context, this facility serves as a key point of interest for those studying water resources and infrastructure in the region.
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 Diamond Lake Aeration Lagoon No 3 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Pend Oreille River At Newport Wa | 23,000 cfs | → |
| Little Spokane River At Elk | 48 cfs | → |
| Priest River Nr Priest River Id | 346 cfs | → |
| Little Spokane River At Dartford | 104 cfs | → |
| Priest R Outflow Nr Coolin | 216 cfs | → |
| Little Spokane River Near Dartford | 328 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Diamond Lake Aeration Lagoon No 3.
Boat launches
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Campgrounds
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Fishing spots
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River runs
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About Diamond Lake Aeration Lagoon No 3
Where does the data for Diamond Lake Aeration Lagoon No 3 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 below 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.
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.