Rivermatics

USGS Streamgage 09205000

New Fork River near Big Piney, WY

New Fork River near Big Piney, WY is USGS streamgage 09205000 in Wyoming, monitoring river discharge in hydrologic subbasin 14040102. It sits on the New Fork River, alongside 3 other gauges Rivermatics tracks on the same river. It drains a watershed of about 1,255 square miles. Discharge records at this site go back to 1954. Typical flow runs near 1,182.9 cfs in July and 363.9 cfs in April, with the higher of the two arriving in July. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.

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Gauge details

State
Wyoming
Drainage area
1,255 sq mi
Gauge elevation
6,812 ft
Subbasin (HUC-8)
14040102
Coordinates
42.56714, -109.9302
USGS site number
09205000
Records begin
1954-09-01 (72 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for New Fork River near Big Piney, WY. 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
286 302 314
279 298 312
272 294 314
268 292 315
262 289 314
258 288 316
260 295 336
259 297 342
255 293 337
250 288 333
245 285 331
243 283 331
238 280 329
236 279 328

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 72 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.

Historical monthly discharge percentiles in cubic feet per second
Month Low p10 Typical p50 High p90 Range
January 150.3 200.2 272.6
February 146.9 205.2 288.7
March 188.3 246.6 414.7
April 221.7 363.9 724.4
May 377.8 953.8 2,359.3
June 1,011.6 2,498.3 5,309
July 498.2 1,182.9 3,019
August 270 468.4 848.5
September 229.5 327.1 524.3
October 239.9 333.5 531.1
November 222.6 307.9 447
December 167.3 234.5 319.3

All values in cubic feet per second (cfs).

Common questions

When does New Fork River near Big Piney, WY normally run highest?
June, on the long-term record. The median daily flow that month is about 2,498.3 cfs, against 200.2 cfs in January, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for New Fork River near Big Piney, WY?
It depends on the month. In January, half of days historically fall near 200.2 cfs, with the middle 80% of days between 150.3 and 272.6 cfs. The month-by-month table on this page gives the full range.
How long has New Fork River near Big Piney, WY been measured?
Discharge records at USGS site 09205000 begin in 1954, about 72 years, covering roughly 9,200 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for New Fork River near Big Piney, WY?
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 New Fork River near Big Piney, WY?
The gauge sits at 42.56714, -109.9302, in Wyoming, in hydrologic subbasin 14040102, at an elevation of about 6,812 feet, draining roughly 1,255 square miles.
Can I use New Fork River near Big Piney, WY 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 New Fork River

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

Other gauges in this subbasin