James Porter dam
James Porter
James Porter, also known as Porter Reservoir, is a privately owned water resource located in Modoc, California, near Xl Ranch Indian Res. Built in 1928 for irrigation and water supply purposes, this earth dam stands at a height of 21 feet and has a storage capacity of 106 acre-feet. Despite its fair condition assessment and high hazard potential, the dam is regulated, permitted, inspected, and enforced by the California Department of Water Resources, Safety of Dams division.
Managed by the Natural Resources Conservation Service, James Porter reservoir plays a crucial role in water supply for the surrounding area, drawing from Tr Parker Cr. Its location at S 1, T42N, R13E, MD, showcases its significance in the region's water management infrastructure. With a drainage area of 0.06 square miles and a surface area of 19 acres, the reservoir provides essential resources for agricultural and domestic use in the vicinity.
Owned by a private entity, James Porter dam is a key component in the water supply network of the region. Its strategic location and historical significance make it a vital asset for water resource and climate enthusiasts interested in understanding the dynamics of water management in the Modoc County area. With ongoing inspections and enforcement measures in place, this reservoir continues to serve its primary purpose of water supply while maintaining a fair condition rating.
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 James Porter -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Sf Pit R Nr Likely Ca | 119 cfs | → |
| Pit R Nr Canby Ca | 2 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near James Porter.
Boat launches
- Big Sage Road Modoc County
- Logan Slough Boating Site
- Green Springs Boating Site
- Duncan North Boating Site
- Duncan South Boating Site
Campgrounds
Fishing spots
Paddle runs
- Sally's Camp To Confluence With Willow Creek
- Wilcox Spring To Clear Lake National Wildlife Refuge Boundary
- Twelvemile Creek
- Deep Creek
More reservoirs
Track James Porter 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 James Porter
Where does the data for James Porter 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 High 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 James Porter.