Lake Kittyprince Dam dam
Lake Kittyprince Dam
Lake Kittyprince Dam, also known as Pattie Prince Dam, is a state-owned structure located in King County, Washington. Built in 1967, this earth dam on Icy Creek serves primarily for irrigation purposes, with additional recreational benefits. The dam has a hydraulic height of 15 feet and a structural height of 12 feet, with a length of 385 feet and a storage capacity of 96 acre-feet.
Despite its critical role in water resource management, Lake Kittyprince Dam has a high hazard potential and a poor condition assessment as of the last inspection in June 2015. The Washington Department of Ecology regulates and inspects the dam, ensuring its continued safety and functionality. However, there are no spillways or outlet gates specified for managing excess water flow, posing a potential risk in the event of heavy rainfall or flooding.
The dam's location in a densely populated area underscores the importance of regular monitoring and maintenance to prevent any potential emergencies. With its historical significance and ecological impact on the surrounding area, Lake Kittyprince Dam serves as a vital infrastructure for water supply and recreational activities, highlighting the intersection of water resources management and climate resilience in the Pacific Northwest.
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 Lake Kittyprince Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Raging River Near Fall City | 29 cfs | → |
| Snoqualmie River Near Snoqualmie | 1,540 cfs | → |
| Sf Snoqualmie River At North Bend | 354 cfs | → |
| Issaquah Creek Near Hobart | 26 cfs | → |
| Issaquah Creek Near Mouth Near Issaquah | 41 cfs | → |
| Cedar River At Cedar Falls | 98 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lake Kittyprince Dam.
Boat launches
- Southeast Fish Hatchery Road 36495-37159, Fall City
- Lake Langlois Road Northeast King County
- Northeast Tolt Hill Road 30348-30762, Carnation
- Shady Lake Boat Ramp
- King County
- Lake Marcel Community Park
Campgrounds
Paddle runs
- Snoqualmie Falls To Plum's Landing
- Confluence With Taylor River To Confluence With North Fork Snoqualmie River
- Wagner Bridge To Confluence With Middle Fork Snoqualmie River
- Quartz Road To Confluence With Middle Fork Snoqualmie River
- Alpine Lakes Wilderness Boundary To Quartz Creek Road
- Outlet Of Snoqualmie Lake To Alpine Lakes Wilderness Boundary
Track Lake Kittyprince 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 Lake Kittyprince Dam
Where does the data for Lake Kittyprince 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 Lake Kittyprince Dam.