USGS Streamgage 06657000
North Platte River below Whalen Diversion Dam, WY
North Platte River below Whalen Diversion Dam, WY is USGS streamgage 06657000 in Wyoming, monitoring river discharge in hydrologic subbasin 10180009. It sits on the North Platte River, alongside 4 other gauges Rivermatics tracks on the same river. It drains a watershed of about 16,318 square miles. Discharge records at this site go back to 1909. Typical flow runs near 1,607.1 cfs in July and 35 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.
View live conditions & forecast →
Gauge details
- State
- Wyoming
- Drainage area
- 16,318 sq mi
- Gauge elevation
- 4,273 ft
- Subbasin (HUC-8)
- 10180009
- Coordinates
- 42.24101, -104.62802
- USGS site number
- 06657000
- Records begin
- 1909-06-03 (117 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for North Platte River below Whalen Diversion Dam, 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.
| Date | Low p10 | Expected p50 | High p90 | Range |
|---|---|---|---|---|
| 30.1 | 37.5 | 46.2 | ||
| 27.2 | 35.9 | 48.1 | ||
| 26.9 | 36.7 | 54.8 | ||
| 27.2 | 37.7 | 67 | ||
| 26.3 | 37.6 | 66.3 | ||
| 26 | 37.6 | 70.1 | ||
| 26.4 | 38.9 | 83.8 | ||
| 25.1 | 37.8 | 97.2 | ||
| 23.2 | 36 | 105 | ||
| 20.6 | 33.8 | 99.1 | ||
| 19.1 | 33 | 108 | ||
| 19.3 | 34.2 | 99.9 | ||
| 18.2 | 33.1 | 98 | ||
| 16.5 | 31.6 | 106 |
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 110 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| January | 1.3 | 8.3 | 166.4 | |
| February | 1 | 9.4 | 222.6 | |
| March | 1.3 | 11.6 | 569.2 | |
| April | 5.8 | 35 | 1,715.1 | |
| May | 29.1 | 573.7 | 3,343.5 | |
| June | 115.4 | 1,070.8 | 4,538 | |
| July | 954.7 | 1,607.1 | 3,360 | |
| August | 775.8 | 1,284.1 | 2,409.4 | |
| September | 126.2 | 479.2 | 1,659.7 | |
| October | 12.8 | 39.5 | 474.3 | |
| November | 5.1 | 11.5 | 245.7 | |
| December | 2.2 | 8.3 | 178.6 |
All values in cubic feet per second (cfs).
Common questions
- When does North Platte River below Whalen Diversion Dam, WY normally run highest?
- July, on the long-term record. The median daily flow that month is about 1,607.1 cfs, against 8.3 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 North Platte River below Whalen Diversion Dam, WY?
- It depends on the month. In January, half of days historically fall near 8.3 cfs, with the middle 80% of days between 1.3 and 166.4 cfs. The month-by-month table on this page gives the full range.
- How long has North Platte River below Whalen Diversion Dam, WY been measured?
- Discharge records at USGS site 06657000 begin in 1909, about 117 years, covering roughly 9,193 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for North Platte River below Whalen Diversion Dam, 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 North Platte River below Whalen Diversion Dam, WY?
- The gauge sits at 42.24101, -104.62802, in Wyoming, in hydrologic subbasin 10180009, at an elevation of about 4,273 feet, draining roughly 16,318 square miles.
- Can I use North Platte River below Whalen Diversion Dam, 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 North Platte River
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the North Platte River in full.
- North Platte River below Pathfinder Reservoir, WY 10,702 sq mi
- North Platte River at Alcova, WY 10,812 sq mi
- North Platte River at Orin, WY 15,025 sq mi
- North Platte River below Whalen Diversion Dam, WY this page
- North Platte River at Scottsbluff, Nebr. 24,500 sq mi