USGS Streamgage 402114105350101
Big Thompson below Moraine Park near Estes Park, CO
Big Thompson below Moraine Park near Estes Park, CO is USGS streamgage 402114105350101 in Colorado, monitoring river discharge in hydrologic subbasin 10190006. It drains a watershed of about 40 square miles. Discharge records at this site go back to 1995. Typical flow runs near 107.4 cfs in July and 19.5 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, alongside daily high and low water-temperature forecasts.
View live conditions & forecast →
Gauge details
- State
- Colorado
- Drainage area
- 40 sq mi
- Subbasin (HUC-8)
- 10190006
- Coordinates
- 40.35386, -105.58414
- USGS site number
- 402114105350101
- Records begin
- 1995-10-01 (31 years)
- Rivermatics forecast
- 14-day flow outlook + water temperature
14-day flow forecast
Based on observations through for Big Thompson below Moraine Park near Estes Park, CO. 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 |
|---|---|---|---|---|
| 9.7 | 10.6 | 11.3 | ||
| 9.1 | 10.1 | 11.1 | ||
| 8.8 | 10 | 11.5 | ||
| 8.8 | 10.4 | 12.9 | ||
| 8.8 | 10.5 | 13.3 | ||
| 8.9 | 11.1 | 15.2 | ||
| 9.4 | 12.4 | 18.9 | ||
| 8.9 | 11.8 | 17 | ||
| 8.2 | 10.6 | 14.6 | ||
| 7.7 | 10 | 13.6 | ||
| 7.4 | 9.5 | 12.8 | ||
| 6.9 | 9 | 12.2 | ||
| 6.5 | 8.6 | 11.5 | ||
| 6.2 | 8.3 | 11.2 |
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 31 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 | 2.5 | 4.2 | 6.6 | |
| February | 2.4 | 3.7 | 6.8 | |
| March | 2.9 | 5.8 | 12.5 | |
| April | 8.6 | 19.5 | 39 | |
| May | 50.6 | 109.4 | 218.2 | |
| June | 109 | 255.2 | 432.1 | |
| July | 55.3 | 107.4 | 202.2 | |
| August | 22.5 | 41.4 | 80.2 | |
| September | 12.1 | 19.4 | 47.7 | |
| October | 8.2 | 12.4 | 32.5 | |
| November | 5.7 | 8.5 | 16.4 | |
| December | 3.8 | 5.8 | 8.8 |
All values in cubic feet per second (cfs).
Common questions
- When does Big Thompson below Moraine Park near Estes Park, CO normally run highest?
- June, on the long-term record. The median daily flow that month is about 255.2 cfs, against 3.7 cfs in February, 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 Thompson below Moraine Park near Estes Park, CO?
- It depends on the month. In January, half of days historically fall near 4.2 cfs, with the middle 80% of days between 2.5 and 6.6 cfs. The month-by-month table on this page gives the full range.
- How long has Big Thompson below Moraine Park near Estes Park, CO been measured?
- Discharge records at USGS site 402114105350101 begin in 1995, about 31 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 Big Thompson below Moraine Park near Estes Park, CO?
- 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. A companion model forecasts each day's water-temperature high and low. 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 Thompson below Moraine Park near Estes Park, CO?
- The gauge sits at 40.35386, -105.58414, in Colorado, in hydrologic subbasin 10190006, draining roughly 40 square miles.
- Can I use Big Thompson below Moraine Park near Estes Park, CO 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.