Rivermatics

USGS Streamgage 06025250

Big Hole River at Maiden Rock near Divide, MT

Big Hole River at Maiden Rock near Divide, MT is USGS streamgage 06025250 in Montana, monitoring river discharge in hydrologic subbasin 10020004. It sits on the Big Hole River, alongside 6 other gauges Rivermatics tracks on the same river. It drains a watershed of about 2,199 square miles. Discharge records at this site go back to 1997. Typical flow runs near 932.3 cfs in July and 1,238.2 cfs in April, with the higher of the two arriving in April. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.

View live conditions & forecast →

Gauge details

State
Montana
Drainage area
2,199 sq mi
Gauge elevation
5,309 ft
Subbasin (HUC-8)
10020004
Coordinates
45.70127, -112.73597
USGS site number
06025250
Records begin
1997-10-01 (29 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for Big Hole River at Maiden Rock near Divide, MT. Each day carries a median estimate and the band the model expects the flow to fall within — not a single number to plan against. Forecasts are re-issued daily; see the live screen for the current outlook.

Forecast daily mean discharge in cubic feet per second, by date
Date Low p10 Expected p50 High p90 Range
264 279 294
249 268 286
239 261 282
231 254 277
223 246 270
219 244 273
217 245 278
213 243 279
209 239 279
204 236 280
201 235 286
197 232 283
193 229 280
190 227 283

All values in cubic feet per second (cfs). Estimates only — do not use them for navigation or for any safety, rescue, or emergency decision.

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 28 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.

Only 10 of 12 months have enough record to summarize; the rest are omitted.

Historical monthly discharge percentiles in cubic feet per second
Month Low p10 Typical p50 High p90 Range
February — 420.9 —
March 295.3 396.2 1,033.8
April 555.1 1,238.2 2,626.7
May 1,209.8 2,717.7 5,656.8
June 1,353.7 3,247 6,054.7
July 385.4 932.3 1,966.8
August 215.5 342.3 649
September 195.2 305.3 436.4
October 250.9 409.8 553.3
November — 424 —

All values in cubic feet per second (cfs).

Common questions

When does Big Hole River at Maiden Rock near Divide, MT normally run highest?
June, on the long-term record. The median daily flow that month is about 3,247 cfs, against 305.3 cfs in September, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Big Hole River at Maiden Rock near Divide, MT?
It depends on the month. In March, half of days historically fall near 396.2 cfs, with the middle 80% of days between 295.3 and 1,033.8 cfs. The month-by-month table on this page gives the full range.
How long has Big Hole River at Maiden Rock near Divide, MT been measured?
Discharge records at USGS site 06025250 begin in 1997, about 29 years, covering roughly 4,958 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for Big Hole River at Maiden Rock near Divide, MT?
Yes. Rivermatics trains a machine-learned model — a temporal-fusion transformer — on this basin's observed flows, weather, and snowpack, and issues a daily flow outlook reaching 14 days ahead: a median estimate inside a confidence band, not a single number to bet on. Every forecast is scored against days the model never trained on, and that track record is published on the live gauge screen. Open live conditions to see the current outlook.
Where is Big Hole River at Maiden Rock near Divide, MT?
The gauge sits at 45.70127, -112.73597, in Montana, in hydrologic subbasin 10020004, at an elevation of about 5,309 feet, draining roughly 2,199 square miles.
Can I use Big Hole River at Maiden Rock near Divide, MT data for flood or safety decisions?
No. Rivermatics provides estimates, not guarantees, and the readings and forecasts here may be delayed, inaccurate, or wrong. Do not use them for navigation or for any safety, rescue, or emergency decision. Check the National Weather Service and USGS directly, and use your own judgment.

Upstream and downstream on the Big Hole River

Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Big Hole River in full.

Other gauges in this subbasin