Black Rock Orchards Dam dam
Black Rock Orchards Dam
Black Rock Orchards Dam, located in Moxee City, Washington, plays a crucial role in providing irrigation water for the surrounding area. Completed in 1985, this earth dam stands at a hydraulic height of 39 feet and a structural height of 31 feet, with a length of 600 feet. Its primary purpose is irrigation, with a normal storage capacity of 392 acre-feet and a maximum storage capacity of 515 acre-feet.
Despite its importance in supporting agriculture in the region, Black Rock Orchards Dam is facing challenges with a high hazard potential and a poor condition assessment. The last inspection in June 2015 revealed the need for improvements to ensure its continued safety and functionality. The dam is under the regulatory authority of the Washington Department of Ecology, which oversees its permitting, inspection, and enforcement.
Water resource and climate enthusiasts monitoring Black Rock Orchards Dam should be aware of its significance in providing irrigation water for the Yakima River basin. With a risk assessment and management measures yet to be defined, there is a pressing need for stakeholders to address the dam's structural integrity and hazard potential to protect both the local agricultural community and downstream areas from potential risks associated with its condition.
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 Black Rock Orchards Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Granger Drain At Granger | 43 cfs | → |
| Columbia River Below Priest Rapids Dam | 158,000 cfs | → |
| Yakima River Above Ahtanum Creek At Union Gap | 2,370 cfs | → |
| Ahtanum Creek At Union Gap | 81 cfs | → |
| Yakima River At Mabton | 4,700 cfs | → |
| Crab Creek Near Beverly | 229 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Black Rock Orchards Dam.
Boat launches
- North Meyers Road 2842, Toppenish
- Road 26 Southwest Desert Aire
- Sunnyside Mabton Road 6448-7798, Mabton
- Vernita Bridge 96, Mattawa
- Rovetto Road 2, Yakima
- Roza Recreation Site
Campgrounds
- Yakima Sportsman State Park
- Saddle Mountains
- Roza - Yakima River Canyon
- Roza Recreation Site
- Roza Campsite 6
- Roza Campsite 1
Paddle runs
Track Black Rock Orchards 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 Black Rock Orchards Dam
Where does the data for Black Rock Orchards 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 Black Rock Orchards Dam.