Isaak Dam No 4 dam
Isaak Dam No 4
Isaak Dam No 4, located in Douglas, Washington, is a privately owned earth dam primarily used for irrigation purposes. Completed in 1987, this dam has a hydraulic height of 8.5 feet and a storage capacity of 64 acre-feet, with a normal storage level of 31.3 acre-feet. With a drainage area of 150 acres, the dam plays a crucial role in providing water for agricultural activities in the region.
Despite being privately owned, Isaak Dam No 4 is regulated and inspected by the Washington Department of Ecology, ensuring that it meets safety standards and poses no significant threat to the surrounding area. The dam has a high hazard potential but is currently assessed to be in fair condition, as of the last inspection in May 2017. The dam's emergency action plan and risk management measures are not fully detailed in the available data, suggesting potential areas for improvement in emergency preparedness.
Water resource and climate enthusiasts interested in Isaak Dam No 4 will find its construction and operational details fascinating, as well as the ongoing regulatory oversight by the state of Washington. The dam's location and purpose highlight its importance in supporting agriculture in the region, making it a critical piece of infrastructure for water management. With a focus on safety and risk assessment, continued monitoring and maintenance of Isaak Dam No 4 will be essential to ensure its long-term reliability and effectiveness in water resource management.
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 Isaak Dam No 4 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Wilson Creek Below Corbett Draw Near Almira | 0 cfs | → |
| Chelan River At Chelan | 268 cfs | → |
| Crab Creek At Irby | 9 cfs | → |
| Okanogan River At Malott | 4,980 cfs | → |
| Methow River Near Pateros | 3,980 cfs | → |
| Omak Creek Near Omak | 3 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Isaak Dam No 4.
Boat launches
- Coulee Corridor Grant County
- Spring Canyon Boat Launch
- Park Lake Trail Grant County
- Park Lake Road Northeast 33185, Grant County
Track Isaak Dam No 4 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 Isaak Dam No 4
Where does the data for Isaak Dam No 4 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 Isaak Dam No 4.