Silver Falls Log Pond (Marion) dam
Silver Falls Log Pond (Marion)
Silver Falls Log Pond, also known as Webb Lake, is a privately owned water resource located in Marion County, Oregon. This dam was completed in 1956 with a primary purpose of irrigation, serving as a vital water source for agricultural activities in the area. The earth dam stands at a height of 14 feet and has a storage capacity of 68 acre-feet, covering a surface area of 11.4 acres.
Situated on Abiqua Creek, a tributary to the Willamette River, this dam plays a crucial role in water management and distribution for the surrounding region. With a low hazard potential and a slide gate for outlet control, the Silver Falls Log Pond is inspected every 6 years to ensure its structural integrity and operational efficiency. Despite its condition being currently ungraded, the dam continues to support the local ecosystem and economy through its irrigation functions.
Owned by a private entity, this water infrastructure is regulated and permitted by the Oregon Water Resources Department (OWRD), showcasing the collaborative efforts between state agencies and private stakeholders in managing water resources effectively. With its picturesque location and historical significance, the Silver Falls Log Pond stands as a testament to the importance of sustainable water management practices in the face of changing climate conditions and increasing water demands.
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 Silver Falls Log Pond (Marion) -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Abiqua Creek At Silverton | 74 cfs | → |
| Silver Creek At Silverton | 52 cfs | → |
| Butte Creek At Monitor | 55 cfs | → |
| Zollner Creek Near Mt Angel | 320 cfs | → |
| Pudding River Near Woodburn | 200 cfs | → |
| Willamette River At Salem | 11,000 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Silver Falls Log Pond (Marion).
Track Silver Falls Log Pond (Marion) 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 Silver Falls Log Pond (Marion)
Where does the data for Silver Falls Log Pond (Marion) 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 Silver Falls Log Pond (Marion).