Headquarters Landfill Leachate Pond dam
Headquarters Landfill Leachate Pond
The Headquarters Landfill Leachate Pond in Cowlitz, Washington, is a significant water resource managed by the local government with oversight from the Washington Department of Ecology. This Earth-type dam was completed in 1993 and serves as a containment pond for leachate generated by the landfill. With a hydraulic height of 15.6 feet and a structural height of 19 feet, the pond has a normal storage capacity of 21.83 acre-feet and a maximum discharge rate of 1.5 cubic feet per second.
Located in Sucker Creek to Silver Lake watershed, the Headquarters Landfill Leachate Pond covers a surface area of 2300 square feet and has a drainage area of 0.03 square miles. The dam's condition has been assessed as satisfactory, with a significant hazard potential. Regular inspections are conducted every 5 years to ensure its integrity and safety. Despite its purpose as a containment pond, the dam also serves other functions, making it a valuable asset for water resource management in the region.
In the event of an emergency, the pond's emergency action plan is periodically reviewed and updated to meet guidelines. The risk management measures for the dam are continuously evaluated to mitigate any potential risks associated with its operation. With its strategic location and vital role in managing leachate from the landfill, the Headquarters Landfill Leachate Pond stands as a crucial infrastructure for water resource and climate enthusiasts to monitor and support in Cowlitz, Washington.
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 Headquarters Landfill Leachate Pond -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| South Fork Toutle River At Toutle | 868 cfs | → |
| Toutle River At Tower Road Near Silver Lake | 1,310 cfs | → |
| Cowlitz River At Castle Rock | 6,380 cfs | → |
| Nf Toutle River Below Srs Near Kid Valley | 766 cfs | → |
| Cowlitz River Below Mayfield Dam | 4,600 cfs | → |
| South Fork Chehalis River Near Wildwood | 56 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Headquarters Landfill Leachate Pond.
Boat launches
- Kerr Road 500, Silver Lake
- Interstate 5, Toledo
- Ocean Beach Highway 6105, Longview
- Front Street Toledo
- Buckley Road 298, Toledo
- Hendrickson Drive 333, Kalama
Campgrounds
- Seaquest State Park
- Yurt Village
- Seaquest State Park Campground
- Kid Valley Campground
- Hudson - Parcher County Park
- Louis Rasmussen Rv Park
Paddle runs
- Headwaters In Sw1/4 Sec 28, T9n, R5e To Mount St. Helens National Volcanic Monument Boundary
- Mount St. Helens National Volcanic Monument Boundary To Mount St. Helens National Volcanic Boundary In Sw 1/4 Of Sec 32, T11n, R5e
- Mount St. Helens National Volcanic Monument Boundary To To Point River Reenters Mshnvm In Se 1/4 Of Sec 11, T10n, R5e
- Nw1/4 Of Sec 9, T5n, R6e To Ne1/4 Of Sec 6, T5n, R5e
- Headwaters In Se1/4 Of Sec 31, T10n, R6e To Mount St. Helens National Volcanic Monument Boundary
- (Upper Muddy Segment) Headwaters In Se1/4 Of Sec 10, T8n, R5e To Conflence With Smith Creek
Track Headquarters Landfill Leachate Pond 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 Headquarters Landfill Leachate Pond
Where does the data for Headquarters Landfill Leachate Pond 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 Headquarters Landfill Leachate Pond.