Pettit Reservoir dam
Pettit Reservoir
Pettit Reservoir in Marion County, Oregon, is a privately owned water resource managed by the Natural Resources Conservation Service. Completed in 1963, this Earth dam stands at 26 feet tall and spans 850 feet in length, holding a maximum storage capacity of 290 acre-feet with a normal storage of 223 acre-feet. The reservoir covers 19 acres and is fed by Brush Creek, providing recreational opportunities for visitors.
With a significant hazard potential and a moderate risk assessment, Pettit Reservoir is subject to state regulation and inspection by the Oregon Water Resources Department. The dam features an uncontrolled spillway and a slide gate as the outlet mechanism. While its condition assessment is currently not rated, the reservoir undergoes inspections every three years to ensure its structural integrity and safety. Additionally, Pettit Reservoir's emergency action plan status and risk management measures remain unspecified, warranting further attention and preparedness efforts.
Located in Aurora, Oregon, Pettit Reservoir serves as a crucial water source for the surrounding area while offering recreational activities for enthusiasts. As an Earth dam structure with a history dating back to the early 1960s, the reservoir embodies a blend of functional water management and leisure opportunities, highlighting the intersection of natural resource conservation and public engagement. Its role in the local ecosystem and community underscores the importance of sustainable 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 Pettit Reservoir -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Silver Creek At Silverton | 52 cfs | → |
| Abiqua Creek At Silverton | 74 cfs | → |
| Zollner Creek Near Mt Angel | 320 cfs | → |
| Butte Creek At Monitor | 59 cfs | → |
| Pudding River Near Woodburn | 159 cfs | → |
| Willamette River At Salem | 10,500 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Pettit Reservoir.
Track Pettit Reservoir 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 Pettit Reservoir
Where does the data for Pettit Reservoir 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 Significant 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 Pettit Reservoir.