J B Long And Company #2 dam
J B Long And Company #2
J B Long and Company #2 is a private dam located in Lewis and Clark County, Montana, with a primary purpose of providing fire protection, stock, or a small fish pond. Built in 1930, this earth dam stands at 20 feet high and spans 250 feet in length, with a storage capacity of 81 acre-feet. The dam is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and is inspected, permitted, and enforced by state authorities, ensuring its safety and compliance with regulations.
Situated in the Omaha District of the US Army Corps of Engineers, J B Long and Company #2 serves as a crucial water resource for the town of Augusta, Montana, offering protection against fire hazards and supporting local livestock and aquatic life. With a low hazard potential and a current condition assessment of "Not Rated," this dam plays a vital role in the community's water management infrastructure. While the structure has not been modified in recent years, its emergency action plan status and risk assessment measures remain undisclosed, raising questions about its preparedness for potential incidents.
Despite lacking specific details on its risk management and emergency response protocols, J B Long and Company #2 stands as a significant feature in Montana's water resource landscape, providing essential services for both human and ecological needs. As water resource and climate enthusiasts, understanding the functionality and regulatory oversight of dams like J B Long and Company #2 is crucial for promoting sustainable water management practices and ensuring the safety and resilience of communities in the face of changing environmental 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 J B Long And Company #2 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Sun River Bl Willow Cr Nr Augusta Mt | 561 cfs | → |
| Sun River Bl Diversion Dam Nr Augusta Mt | 641 cfs | → |
| South Fork Sun River Near Augusta Mt | 685 cfs | → |
| North Fork Sun River Near Augusta Mt | 564 cfs | → |
| Dearborn River Near Craig Mt | 150 cfs | → |
| Sun River At Simms Mt | 588 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near J B Long And Company #2.
Boat launches
Campgrounds
- Nilan Reservoir Fas
- Double Falls Campground
- Wood Lake
- Wood Lake Campground
- Bean Lake Fas
- Willow Creek Fas
Fishing spots
Paddle runs
- Headwaters, Sec. 13, T18n, R10w To Forest Boundary, Sec. 6, T17n, R7w
- Headwaters, Sec. 15, T18n, R10w To Straight Creek, Sec. 25, T19n, R10w
- Dobrota Headwaters, Sec. 23, T18n, R10w To Mainstem, Sec. 31, T18n, R9w
- Cooney Cr Headwaters, Sec. 17, T19n, R9w To Mainstem, Sec. 1, T17n, R10w
- Wilderness Boundary To South Fork Sun River, Sec. 26, T22n, R10w
- Headwaters, Sec. 4, T18n, R10w To North Fork Sun River, Sec. 26, T22n, R10w
Track J B Long And Company #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.
About J B Long And Company #2
Where does the data for J B Long And Company #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 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 J B Long And Company #2.