Flagg dam
Flagg
Flagg is a private water resource structure located in Franklin, Maine, along the South Branch Dead River. Built in 1922, this dam stands at a height of 13 feet and has a length of 65 feet, with a storage capacity of 300 acre-feet. While it serves a primary purpose of "Other," its purposes and dam types are not specified in the data. Flagg is state-regulated by MEMA, with permitting, inspection, and enforcement processes in place to ensure its safety and compliance.
Despite being categorized as having a low hazard potential and not yet assessed for condition, Flagg remains an essential component of the local water infrastructure. With its location in a scenic area of Maine, it is crucial for water resource and climate enthusiasts to monitor and understand the significance of structures like Flagg in maintaining water security and environmental balance. While lacking detailed information on specific features like spillways and outlet gates, the data highlights the importance of continuous monitoring and maintenance to ensure the safety and functionality of Flagg and similar structures.
As a private dam with historical significance, Flagg represents a piece of Maine's water resource infrastructure that requires ongoing attention and management. Its association with the South Branch Dead River adds to its ecological and recreational value, making it a focal point for those interested in water conservation and climate resilience. By taking an active interest in the regulation and maintenance of structures like Flagg, enthusiasts can contribute to the sustainability and preservation of water resources in the region.
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 Flagg -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Dead River Near Dead River | 883 cfs | → |
| Swift River Near Roxbury | 442 cfs | → |
| Diamond River Near Wentworth Location | 592 cfs | → |
| Spencer Stream At Mouth | 514 cfs | → |
| Ellis River At South Andover | 703 cfs | → |
| Carrabassett River Near North Anson | 1,720 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Flagg.
Boat launches
- Park Road Rangeley
- State Park Road Rangeley
- Canadian Road Stratton
- Boat Landing Access Road Oxford County
- South Arm Road Oxford County
- Arnold Trail 4026, Franklin County
Campgrounds
- Rangeley Lake State Park
- Rangeley Lake Campground
- Cranberry Stream Campsite
- Horns Pond Lean-Tos
- Avery Lean-To
- Safford Notch Campsite
Paddle runs
- Kennebec Gorge
- The South Branch Headwater From Hilton Farm To Bridge At Upper End Of Canada Falls Lake; Also Penobscot Lake And Brook
More reservoirs
Track Flagg 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 Flagg
Where does the data for Flagg 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 Flagg.