Deer Park Sewage Treatment Lagoon dam
Deer Park Sewage Treatment Lagoon
Deer Park Sewage Treatment Lagoon, located in Spokane, Washington, is a vital facility owned and regulated by the local government. This lagoon plays a crucial role in wastewater treatment and is state-regulated by the Washington Department of Ecology. With a hydraulic height of 18.1 feet and a structural height of 17.9 feet, this earth-type dam was completed in 1984 and has a normal storage capacity of 24.7 acre-feet.
Despite its importance, the Deer Park Sewage Treatment Lagoon has been flagged with a high hazard potential and poor condition assessment. The last inspection in May 2019 highlighted the need for improvements and more frequent assessments due to its critical role in managing sewage in the region. With a drainage area of 0.04 square miles and a surface area of 21 acres, the lagoon's capacity to handle wastewater and maintain water quality for Tr-Dragoon Creek is paramount to its surrounding environment.
As water resource and climate enthusiasts, it is crucial to monitor the condition and regulatory compliance of facilities like the Deer Park Sewage Treatment Lagoon to ensure the protection of water quality and environmental stability. With potential risks identified and a history of poor conditions, efforts to improve and maintain this facility are essential for the health and sustainability of the surrounding ecosystem.
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 Deer Park Sewage Treatment Lagoon -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Little Spokane River At Elk | 48 cfs | → |
| Little Spokane River Near Dartford | 437 cfs | → |
| Little Spokane River At Dartford | 187 cfs | → |
| Spokane River Below Nine Mile Dam At Spokane | 6,350 cfs | → |
| Chamokane Creek Below Falls Near Long Lake | 30 cfs | → |
| Spokane River At Spokane | 5,740 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Deer Park Sewage Treatment Lagoon.
Boat launches
- Viewpoint Road 61, Newport
- North Aubrey L White Parkway Spokane
- South Shore Diamond Lake Road 765-1255, Newport
- South Gorge Trail Spokane
- Northeast Newman Lake Drive 12801, Newman Lake
- Pondoray Shores Road, Newport
Track Deer Park Sewage Treatment Lagoon 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 Deer Park Sewage Treatment Lagoon
Where does the data for Deer Park Sewage Treatment Lagoon 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 Deer Park Sewage Treatment Lagoon.