Johan Vineyard Reservoir H dam
Johan Vineyard Reservoir H
Johan Vineyard Reservoir H is a private hydroelectric dam located in Polk, Oregon, with a primary purpose of generating hydroelectric power while also serving flood risk reduction, navigation, and recreation purposes. This Earth-type dam has a height of 35 feet and a storage capacity of 65 acre-feet, making it an essential water resource in the region. The dam is regulated by the Oregon Water Resources Department and undergoes regular inspections to ensure its safety and compliance with state regulations.
Despite its low hazard potential, Johan Vineyard Reservoir H plays a vital role in water management and energy production in the area. The dam is equipped with slide gates for water release and has a designated emergency action plan in place, ensuring preparedness in case of any unforeseen events. While the dam's condition is currently not rated, its significance in providing sustainable energy and water resources underscores the importance of ongoing monitoring and maintenance to ensure its continued operation for the benefit of the community and the environment. With its strategic location and multi-purpose design, Johan Vineyard Reservoir H stands as a testament to the integration of water resource management and climate resilience in the region.
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 Johan Vineyard Reservoir H -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Willamette River At Salem | 11,000 cfs | → |
| South Yamhill River At Mcminnville | 351 cfs | → |
| Luckiamute River Near Suver | 223 cfs | → |
| Zollner Creek Near Mt Angel | 320 cfs | → |
| Abiqua Creek At Silverton | 74 cfs | → |
| Silver Creek At Silverton | 52 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Johan Vineyard Reservoir H.
Track Johan Vineyard Reservoir H 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 Johan Vineyard Reservoir H
Where does the data for Johan Vineyard Reservoir H 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 Low 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 Johan Vineyard Reservoir H.