Dam Report

Bates Reservoir dam

Oregon, USA John Day, Middle Fork Hazard Low
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Tonight low
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Dam height
26ft
Hazard rating
Low
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Bates Reservoir -- None dam
Bates Reservoir None · John Day, Middle Fork
About this dam

Bates Reservoir

Bates Reservoir, also known as Bates Pond Dam, is a privately owned water resource nestled in Grant County, Oregon. Completed in 1949, this earth dam stands at a height of 26 feet and spans a length of 320 feet, offering a serene surface area of 9.8 acres. With a primary purpose of recreation, the reservoir provides a tranquil escape for water and climate enthusiasts to enjoy activities such as fishing, boating, and wildlife observation.

Located along the Middle Fork of the John Day River, Bates Reservoir boasts a maximum storage capacity of 100 acre-feet and a normal storage level of 32 acre-feet. Although classified as having low hazard potential, the dam undergoes regular inspections by the Oregon Water Resources Department to ensure its structural integrity. The surrounding area is rich in natural beauty, offering visitors a chance to appreciate the harmonious coexistence of human-made infrastructure with the picturesque landscape of the Pacific Northwest.

Bates Reservoir serves as a testament to the harmonious balance between human recreation and environmental conservation. With its modest size and low hazard potential, this hidden gem in Oregon provides a peaceful retreat for those seeking to connect with nature and enjoy the beauty of the John Day River watershed. Whether for a leisurely day of fishing or a quiet paddle on the calm waters, Bates Reservoir offers a unique opportunity to appreciate the intersection of water resources and climate in a tranquil setting.

StateNone
River / streamJohn Day, Middle Fork
NID IDOR00454
Owner typePrivate
Primary purposeRecreation
Dam typeEarth
Year built1949
Dam height26 ft
Dam length320 ft
Max storage100 AF
Normal storage32 AF
Surface area9.8 ac
Drainage area18.0 sq mi
Hazard potentialLow
ConditionNot Rated
Last inspectionThu, 09 May 2013 00:00:00 GMT

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.
Detailed forecast

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.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

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.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

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Regional inflow

Nearby streamflow gauges

USGS streamgauges around Bates Reservoir -- inflows here typically show up in storage 24-72 hours later.

Track Bates 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.

FAQ

About Bates Reservoir

Where does the data for Bates 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 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.

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