Conner Jarvis East Pond dam
Conner Jarvis East Pond
Conner Jarvis East Pond, located in King County, Washington, is a flood risk reduction structure designed and regulated by the Washington Dept of Ecology. Completed in 2018, this earth dam stands at a hydraulic height of 7 feet and spans a length of 1230 feet. With a storage capacity of 13 acre-feet, it serves the primary purpose of mitigating flood risks in the area.
The dam's condition assessment in June 2018 deemed it in satisfactory condition, with a significant hazard potential. Regular inspections are conducted every 5 years to ensure its continued functionality and safety. Despite its critical role in flood risk reduction, the structure has not been modified since its completion and lacks detailed risk management measures.
Water resource and climate enthusiasts interested in the intersection of infrastructure and environmental protection will find Conner Jarvis East Pond to be a valuable case study. Its location, design details, and regulatory oversight offer insights into the complexities of managing water resources in a changing climate. Further research and analysis could uncover opportunities for enhancing the dam's resilience and effectiveness in safeguarding the community from flood events.
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 Conner Jarvis East Pond -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Issaquah Creek Near Mouth Near Issaquah | 44 cfs | → |
| Raging River Near Fall City | 32 cfs | → |
| Mercer Creek Near Bellevue | 12 cfs | → |
| Snoqualmie River Near Carnation | 1,430 cfs | → |
| Issaquah Creek Near Hobart | 27 cfs | → |
| Snoqualmie River Near Snoqualmie | 1,610 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Conner Jarvis East Pond.
Boat launches
- Northeast Tolt Hill Road 30348-30762, Carnation
- West Lake Sammamish Parkway Northeast Redmond
- I 90 Trail Bellevue
- Lake Langlois Road Northeast King County
- Southeast Fish Hatchery Road 36495-37159, Fall City
- Mercer Island Boat Launch
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
- Confluence Of Tye And Foss Rivers To Gold Bar
Track Conner Jarvis East 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 Conner Jarvis East Pond
Where does the data for Conner Jarvis East 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 Conner Jarvis East Pond.