Big Black River Near Depot Mtn flow report
As of July 16, 2026, Big Black River Near Depot Mtn is flowing at 38 cfs with a gage height of 3.27 ft. Source: USGS gauge #01010070, refreshed throughout the day.
Historical Data
Big Black River Near Depot Mtn at a glance
How Big Black River Near Depot Mtn is running right now, where it sits on the map, and the key gauge stats.
Big Black River Near Depot Mtn is flowing at 38 cfs, with the water sitting 3.27 ft at the gage.
This is USGS gauge #01010070 in Maine. Over the past 10 days the average has been 46 cfs, peaking at 66 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the Maine flow report.
Engineering Data
Flow-duration statistics and observed peak-flow context computed from this gauge’s complete daily record (USGS #01010070).
Percentiles are flow-duration values computed from this gauge’s observed daily record as archived by Snoflo. Return periods are Weibull plotting-position estimates from observed annual maxima, provided as general reference context only. Always verify against official USGS NWIS records. Part of Snoflo for Engineering.
Streamflow Forecast
Over the next 5 days, Big Black River Near Depot Mtn is expected to hold near today's 38 cfs, toward roughly 38 cfs by 2026-07-20 (likely range 11-127 cfs) -- running well below the seasonal normal.
Powered by PULSE — Snoflo’s forecast engine, trained on this gauge’s full record of storms, snowmelt, and dry spells.
| Date | Expected (p50) | Likely range (p25–p75) | vs normal | Projected stage |
|---|
How does this compare to past years?
Year-over-year overlay, annual peak discharge, the full distribution of daily flows on record, and the gauge's rating curve.
Weather Forecast
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.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day forecast
Daily temperatures, snow, and rain projected over the next two weeks.
Big Black River Near Depot Mtn
It is fed by several smaller streams and flows through dense forested regions. The river is known for its unique geology, which includes large boulders and rocky outcrops. It experiences seasonal fluctuations in flow, with peak flows occurring during the spring and fall. There are no significant dams on the river, which allows for relatively uninterrupted flow. Interesting fact: The river is named after the dark color of its waters, which is caused by the tannins released from decaying vegetation.
Nearby streamflow levels
Cross-check Big Black River Near Depot Mtn's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Big Black River Near Depot Mtn | 38 cfs |
| St. John River At Ninemile Bridge | 235 cfs |
| Allagash River Near Allagash | 599 cfs |
| St. John River At Dickey | 709 cfs |
Plan a trip
Reservoirs, boat launches, river runs, and fishing spots within driving distance of Big Black River Near Depot Mtn.
Boat launches
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River levels & flood safety
- Read the level before you go
- A river that's runnable at one flow can be deadly at another. Check current discharge and gage height — like the values shown above — against the flood-stage thresholds, and remember levels can spike fast after rain or a dam release.
- Respect cold water
- Snowmelt rivers run cold even in summer. Sudden immersion triggers cold-water shock and saps strength within minutes. Wear a PFD, dress for the water temperature (not the air), and never wade or paddle alone.
- Watch for swiftwater hazards
- Strainers (downed trees), undercut rocks, and low-head dams are the deadliest features on moving water. High, fast, muddy water hides them. If in doubt, scout from shore and portage.
- Mind flash floods & releases
- Narrow canyons can flood from a storm miles upstream, and dam-controlled reaches can rise without warning. Know the forecast, the release schedule, and your exit before you launch.
Track Big Black River Near Depot Mtn in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Big Black River Near Depot Mtn crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Big Black River Near Depot Mtn
Where does the streamflow data for Big Black River Near Depot Mtn come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 01010070. Snoflo refreshes the time series throughout the day. Forecasts come from the NOAA / yr.no feed Snoflo's iOS app uses.
How often is the report updated?
USGS gauges report continuously (typically every 15 minutes). Snoflo pulls fresh values throughout the day — look for the "as of" timestamp on the streamflow hero card.
What's the difference between discharge and gage height?
Discharge (cubic feet per second, or cfs) is the volume of water flowing past the gauge each second. Gage height is how high the water sits at the gauge (feet). They're related by a rating curve specific to each gauge — higher water means more flow, but the exact ratio depends on channel shape.
How is "percent of median" calculated?
Today's discharge is compared to the historical median discharge on this calendar day across the gauge's full record. 100% = right on median; 200% = a very high year; 30% = a drought-level low.
What are flood stages, and is this river safe right now?
Flood stages are NWS-defined gage-height thresholds — Action, Minor, Moderate, Major — marking when nearby roads or floodplains start to be affected. "Safe" depends on your activity and skill: a level that's a fun paddle for an expert can be lethal for a wader. Always check the current level against the thresholds above and the safety links, and when in doubt, stay off the water.
Can I get alerts when Big Black River Near Depot Mtn rises?
Yes — flow alerts are managed in the Snoflo iOS app. Favorite this gauge, set a streamflow threshold (e.g. "alert me when discharge crosses 5,000 cfs"), and you'll get a push the moment USGS reports the crossing.
Access the free Big Black River Near Depot Mtn report
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