Dam Report

Ross No. 2 dam

California, USA Tr Stillwater Cr Hazard Significant
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Dam height
29ft
Hazard rating
Significant
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Ross No. 2 -- None dam
Ross No. 2 None · Tr Stillwater Cr
About this dam

Ross No. 2

Ross No. 2 is a privately owned earth dam located in Redding, California, along the Tr Stillwater Creek. Completed in 1957, this dam stands at a height of 29 feet and has a storage capacity of 243 acre-feet. Its primary purpose is flood risk reduction, although it also serves irrigation and water supply needs in the area. The dam has a significant hazard potential but has been assessed as satisfactory in condition as of September 2017.

Managed by the California Department of Water Resources, Ross No. 2 is regulated, permitted, inspected, and enforced by state authorities to ensure its safety and compliance with regulations. The dam has a drainage area of 0.23 square miles and a surface area of 22 acres. It is part of the flood risk reduction infrastructure in the region, contributing to the overall water resource management efforts in Shasta County. With its strategic location and design, Ross No. 2 plays a crucial role in protecting the surrounding communities from potential flood events.

In the event of an emergency, the dam's owners are expected to have an Emergency Action Plan in place, although specific details about its preparedness and compliance with guidelines are not provided in the available data. Overall, Ross No. 2 serves as a vital structure for water resource management and climate resilience in the area, highlighting the importance of maintaining and monitoring dams to mitigate risks and ensure the safety of downstream communities.

StateNone
River / streamTr Stillwater Cr
NID IDCA00935
Owner typePrivate
Primary purposeFlood Risk Reduction
Dam typeEarth
Year built1957
Dam height29 ft
Dam length760 ft
Max storage243 AF
Surface area22.0 ac
Drainage area0.2 sq mi
Hazard potentialSignificant
ConditionSatisfactory
Last inspectionThu, 23 Jul 2020 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 Ross No. 2 -- inflows here typically show up in storage 24-72 hours later.

Track Ross No. 2 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 Ross No. 2

Where does the data for Ross No. 2 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.

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Manage alerts in the Snoflo app

Custom alerts are configured in the iOS app -- favorite this dam, set a threshold, and you'll get a push the moment conditions cross.

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