Dam Report

Stemilt Saddle Dam dam

Washington, USA Orr Creek-Offstream Hazard High
Today high
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Tonight low
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Dam height
9ft
Hazard rating
High
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Stemilt Saddle Dam -- None dam
Stemilt Saddle Dam None · Orr Creek-Offstream
About this dam

Stemilt Saddle Dam

Stemilt Saddle Dam, located in Malaga, Washington, is a vital structure for irrigation purposes in the region. Built in 1962, this earth dam stands at a hydraulic height of 9 feet and a length of 210 feet, providing a storage capacity of 200 acre-feet to support agricultural activities. The dam, situated on Orr Creek-Offstream, is regulated and inspected by the Washington Department of Ecology, ensuring its safety and compliance with state standards.

With a hazard potential rated as high and a fair condition assessment, Stemilt Saddle Dam remains a critical asset for water resource management in Chelan County. The dam's purpose is solely for irrigation, highlighting its essential role in sustaining agricultural operations in the area. Despite its age, the dam continues to serve its function effectively, with regular inspections to monitor and maintain its structural integrity. As climate change impacts water resources, the Stemilt Saddle Dam plays a crucial role in ensuring water availability for agricultural activities in the region.

As climate enthusiasts and water resource advocates, understanding the significance of structures like Stemilt Saddle Dam is essential for promoting sustainable water management practices. By recognizing the role of dams in supporting irrigation needs and the importance of regulatory oversight, we can work towards preserving and enhancing water resources amidst changing climate conditions. Stemilt Saddle Dam stands as a testament to the intersection of water infrastructure, climate adaptation, and agricultural sustainability in Washington's Chelan County.

StateNone
River / streamOrr Creek-Offstream
NID IDWA00363
Owner typePublic Utility
Primary purposeIrrigation
Dam typeEarth
Year built1962
Dam length210 ft
Max storage200 AF
Normal storage100 AF
Surface area23.0 ac
Drainage area0.3 sq mi
Hazard potentialHigh
ConditionFair
Last inspectionWed, 14 Oct 2020 12:00:00 GMT

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.
Detailed forecast

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.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

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.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

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Regional inflow

Nearby streamflow gauges

USGS streamgauges around Stemilt Saddle Dam -- inflows here typically show up in storage 24-72 hours later.

Track Stemilt Saddle 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.

FAQ

About Stemilt Saddle Dam

Where does the data for Stemilt Saddle 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.