Evans Flavorland Reservoir No 1 dam
Evans Flavorland Reservoir No 1
Evans Flavorland Reservoir No 1, located in Sunnyside, Washington, is a privately-owned earth dam that was completed in 1985 for the primary purpose of irrigation. Managed by the Washington Department of Ecology, this reservoir has a capacity of 126 acre-feet and covers a surface area of 3.1 acres, serving the agricultural needs of the surrounding area. The dam stands at a hydraulic height of 40 feet, with a structural height of 40 feet, making it a crucial water resource for the local community.
With a drainage area of 0.59 square miles and a maximum discharge of 250 cubic feet per second, Evans Flavorland Reservoir No 1 plays a significant role in water management and conservation in Yakima County. Despite being classified as having a high hazard potential, the dam is currently in fair condition according to the last inspection in May 2018. The dam's emergency action plan was last revised in October 2019, ensuring that proper protocols are in place to address any potential risks or incidents that may arise.
Overall, Evans Flavorland Reservoir No 1 serves as a vital component of the water infrastructure in the region, supporting agricultural activities and water supply needs. With its strategic location along an unnamed tributary of the Yakima River, the reservoir plays a key role in irrigation and water storage, highlighting the importance of efficient water resource management in the face of changing climate conditions.
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 Evans Flavorland Reservoir No 1 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Granger Drain At Granger | 39 cfs | → |
| Yakima River At Mabton | 4,700 cfs | → |
| Columbia River Below Priest Rapids Dam | 156,000 cfs | → |
| Yakima River Above Ahtanum Creek At Union Gap | 2,340 cfs | → |
| Ahtanum Creek At Union Gap | 78 cfs | → |
| Yakima River At Kiona | 944 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Evans Flavorland Reservoir No 1.
Boat launches
- Sunnyside Mabton Road 6448-7798, Mabton
- North Meyers Road 2842, Toppenish
- Bryon Road, Prosser
- Vernita Bridge 96, Mattawa
- Road 26 Southwest Desert Aire
- North State Route 225 Benton County
Campgrounds
Paddle runs
Track Evans Flavorland Reservoir No 1 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 Evans Flavorland Reservoir No 1
Where does the data for Evans Flavorland Reservoir No 1 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 Evans Flavorland Reservoir No 1.