USGS Streamgage 06660000
Laramie River at Laramie, WY
Laramie River at Laramie, WY is USGS streamgage 06660000 in Wyoming, monitoring river discharge in hydrologic subbasin 10180010. It sits on the Laramie River, alongside 1 other gauge Rivermatics tracks on the same river. It drains a watershed of about 1,071 square miles. Discharge records at this site go back to 1933. Typical flow runs near 81.1 cfs in July and 68.7 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
- 1,071 sq mi
- Gauge elevation
- 7,137 ft
- Subbasin (HUC-8)
- 10180010
- Coordinates
- 41.32778, -105.60742
- USGS site number
- 06660000
- Records begin
- 1933-04-01 (93 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Laramie River at Laramie, 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 |
|---|---|---|---|---|
| 4 | 4.6 | 5.1 | ||
| 3.4 | 4.5 | 5.6 | ||
| 3 | 4.5 | 6.1 | ||
| 2.8 | 4.5 | 6.4 | ||
| 2.6 | 4.5 | 6.7 | ||
| 2.4 | 4.6 | 7.4 | ||
| 2.4 | 4.8 | 8 | ||
| 2.5 | 5.1 | 8.4 | ||
| 2.2 | 4.8 | 8.3 | ||
| 1.7 | 4.5 | 8.2 | ||
| 1.9 | 4.4 | 8.1 | ||
| 1.5 | 4.1 | 7.9 | ||
| 1.3 | 3.8 | 7.6 | ||
| 1.2 | 3.6 | 7.4 |
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 94 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 | 21.4 | 39.8 | 69 | |
| February | 25.6 | 42.3 | 70.2 | |
| March | 28.2 | 54.9 | 102.9 | |
| April | 20.4 | 68.7 | 166.7 | |
| May | 54.8 | 227.5 | 582.3 | |
| June | 95 | 424.3 | 1,091 | |
| July | 14 | 81.1 | 212.8 | |
| August | 8.8 | 27.3 | 76.8 | |
| September | 3.8 | 13.3 | 41.4 | |
| October | 8.3 | 41.4 | 97.7 | |
| November | 16.6 | 48.4 | 90.7 | |
| December | 23 | 44.6 | 76 |
All values in cubic feet per second (cfs).
Common questions
- When does Laramie River at Laramie, WY normally run highest?
- June, on the long-term record. The median daily flow that month is about 424.3 cfs, against 13.3 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 Laramie River at Laramie, WY?
- It depends on the month. In January, half of days historically fall near 39.8 cfs, with the middle 80% of days between 21.4 and 69 cfs. The month-by-month table on this page gives the full range.
- How long has Laramie River at Laramie, WY been measured?
- Discharge records at USGS site 06660000 begin in 1933, about 93 years, covering roughly 4,345 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for Laramie River at Laramie, 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 Laramie River at Laramie, WY?
- The gauge sits at 41.32778, -105.60742, in Wyoming, in hydrologic subbasin 10180010, at an elevation of about 7,137 feet, draining roughly 1,071 square miles.
- Can I use Laramie River at Laramie, 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 Laramie River
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Laramie River in full.
- Laramie River at Laramie, WY this page
- Laramie River near Fort Laramie, WY 4,564 sq mi