Walla Walla Effluent Storage Lagoon dam
Walla Walla Effluent Storage Lagoon
The Walla Walla Effluent Storage Lagoon in Washington state serves as a vital water resource management facility designed by JUB Engineers in 2008. As a key component of the local government's infrastructure, this earth dam structure is regulated, permitted, inspected, and enforced by the Washington Department of Ecology. With a height of 19.45 feet and a storage capacity of 87 acre-feet, the lagoon plays a crucial role in storing and managing effluent in Walla Walla.
The Walla Walla Effluent Storage Lagoon is strategically located in Walla Walla, Washington, within Congressional District 05. With a surface area of 5.15 acres and a normal storage capacity of 78.2 acre-feet, the lagoon helps address water management needs in the region. Despite being classified as having a significant hazard potential, the dam is in fair condition as of the last inspection in April 2019. The lagoon's emergency action plan was prepared in 2008, ensuring that appropriate measures are in place to address any potential risks or emergencies.
Overall, the Walla Walla Effluent Storage Lagoon stands as a critical water resource infrastructure in Walla Walla, Washington, designed to effectively store and manage effluent. With its regulated and inspected status, the lagoon plays a key role in water resource management in the region, contributing to the overall environmental sustainability and water security of the area.
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 Walla Walla Effluent Storage Lagoon -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Mill Creek At Walla Walla | 38 cfs | → |
| Mill Creek At Five Mile Rd Br Nr Walla Walla | 634 cfs | → |
| Mill Creek Near Walla Walla | 58 cfs | → |
| Walla Walla River Near Touchet | 281 cfs | → |
| Umatilla River Above Meacham Creek | 114 cfs | → |
| Meacham Creek At Gibbon | 20 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Walla Walla Effluent Storage Lagoon.
Boat launches
- Columbia Plateau Trail, Pasco
- Columbia Plateau Trail State Park Franklin County
- Us 12 Walla Walla County
Campgrounds
- Lewis And Clark Trail State Park
- Lewis And Clark Campground
- Indian Camp
- Squaw Spring
- Target Meadows Campground
- Target Meadows
Track Walla Walla Effluent Storage 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 Walla Walla Effluent Storage Lagoon
Where does the data for Walla Walla Effluent Storage 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 Significant 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 Walla Walla Effluent Storage Lagoon.