Youngs Lake New Inlet Dam dam
Youngs Lake New Inlet Dam
Located in King County, Washington, the Youngs Lake New Inlet Dam serves as a vital water supply infrastructure built in 1926 along the Tr-Cedar River. Standing at a structural height of 20 feet with a hydraulic height of 18 feet, this earth dam plays a crucial role in storing water for public utility purposes. With a maximum storage capacity of 35,450 acre-feet and a normal storage capacity of 33,760 acre-feet, this dam covers a surface area of 690 acres and serves a drainage area of 2.19 square miles.
Managed by the Washington Department of Ecology, the Youngs Lake New Inlet Dam is classified as a high hazard potential structure but has been assessed to be in satisfactory condition as of June 2019. With state-regulated oversight and regular inspections, this dam is equipped to handle emergencies effectively, although its spillway type and discharge capabilities are not specified. Despite its age, the dam continues to meet water supply demands in the region and ensures the safety and reliability of the water source for the surrounding communities.
The Youngs Lake New Inlet Dam is a key piece of infrastructure in the region's water resource management efforts, providing a lifeline for residents in King County, Washington. With its stone core and soil foundation, the dam has stood the test of time and continues to be a crucial component in the state's water supply system. With its history dating back to the early 20th century, this dam represents a blend of tradition and modern engineering practices, ensuring the sustainable management of water resources in the area for years to come.
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 Youngs Lake New Inlet Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Rock Creek Near Maple Valley | 2 cfs | → |
| Issaquah Creek Near Hobart | 27 cfs | → |
| Spring Brook Creek At Orillia | 6 cfs | → |
| Rock Creek At Highway 516 Near Ravensdale | 11 cfs | → |
| Cedar River Below Diversion Near Landsburg | 271 cfs | → |
| Mill Creek At Earthworks Park At Kent | 1 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Youngs Lake New Inlet Dam.
Boat launches
- Shady Lake Boat Ramp
- 148th Avenue Southeast Kent
- Southeast 296th Street 22601, Black Diamond
- Lake Fenwick Trail Kent
- Southeast Green Valley Road 12507-12565, Auburn
- King County
Campgrounds
- Kanaskat-Palmer State Park Campground
- Kanaskat Palmer Recreation Area
- Point Robinson Campground
- Dash Point State Park
- Dash Point Campground
- Tolt-Macdonald Park Campground
Paddle runs
- Snoqualmie Falls To Plum's Landing
- Wagner Bridge To Confluence With Middle Fork Snoqualmie River
- Confluence With Taylor River To Confluence With North Fork Snoqualmie River
- Huckleberry Creek To Confluence With Clearwater River
- Quartz Road To Confluence With Middle Fork Snoqualmie River
- Alpine Lakes Wilderness Boundary To Quartz Creek Road
Track Youngs Lake New Inlet 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 Youngs Lake New Inlet Dam
Where does the data for Youngs Lake New Inlet 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 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 Youngs Lake New Inlet Dam.