Mallard Marsh Dam dam
Mallard Marsh Dam
Mallard Marsh Dam, located in Pend Oreille, Washington, was completed in 1960 and serves as a recreational site for water resource and climate enthusiasts. With a height of 8 feet and a length of 350 feet, the dam has a storage capacity of 250 acre-feet and a surface area of 40 acres. While the dam's primary purpose is recreation, it is also regulated by the Washington Dept of Ecology and undergoes regular inspections and enforcement measures to ensure its safety and compliance with state regulations.
Despite being classified as low hazard potential and currently rated as "Not Rated" in terms of condition assessment, Mallard Marsh Dam plays a crucial role in providing recreational opportunities and maintaining water resources in the area. The dam is predominantly an earth dam with stone core types and soil foundations, with a hydraulic height of 8 feet. As a privately owned structure, it falls under state jurisdiction and is subject to state permitting, inspection, and enforcement procedures to safeguard against potential risks and ensure its continued functionality for the community.
Located in a scenic area with a beautiful marsh ecosystem, Mallard Marsh Dam offers a tranquil setting for outdoor activities such as boating, fishing, and birdwatching. The dam's association with the Seattle District and its proximity to Congressional District 05, Washington, further highlight its importance as a recreational and environmental asset in the region. As water resource and climate enthusiasts continue to appreciate the natural beauty and ecological significance of Mallard Marsh Dam, ongoing efforts to maintain its safety and integrity will be essential for its long-term sustainability and enjoyment by future generations.
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 Mallard Marsh Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Little Spokane River At Elk | 48 cfs | → |
| Pend Oreille River At Newport Wa | 46,700 cfs | → |
| Priest River Nr Priest River Id | 3,460 cfs | → |
| Little Spokane River At Dartford | 187 cfs | → |
| Priest R Outflow Nr Coolin | 2,820 cfs | → |
| Little Spokane River Near Dartford | 473 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mallard Marsh Dam.
⚓ Boat launches
- South Shore Diamond Lake Road 765-1255, Newport
- Viewpoint Road 61, Newport
- Pondoray Shores Road, Newport
- Old Diamond Mill Road 71, Oldtown
- Kaniksu Drive Pend Oreille County
- Pow Wow Park, Cusick
⛺ Campgrounds
- Skookum Creek- State Forest
- Albeni Cove Campground
- Albeni Cove - Oldtown
- Enchantment Camp
- Lodge Creek Camp
- County Fair Campground
🛶 Paddle runs
- Forest Boundary, Sec. 34, T59n, R2w To Harrison Lake, Sec. 31, T62n, R2w
- Upper Priest River
- Segment 2 Flows For Almost 10 Miles From The Intersection With Trail 312 To Its Confluence With The Upper Priest River To Segment 2 Flows For Almost 10 Miles From The Intersection With Trail 312 To Its Confluence With The Upper Priest River
Track Mallard Marsh 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 Mallard Marsh Dam
Where does the data for Mallard Marsh 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 Low 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 Mallard Marsh Dam.