USGS Streamgage 401733105392404
The Loch Outlet - Loch Vale
The Loch Outlet - Loch Vale is USGS streamgage 401733105392404 in Colorado, monitoring river discharge in hydrologic subbasin 10190006. It drains a watershed of about 3 square miles. Discharge records at this site go back to 1983. Typical flow runs near 15.9 cfs in July and 1.1 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Colorado
- Drainage area
- 3 sq mi
- Subbasin (HUC-8)
- 10190006
- Coordinates
- 40.29306, -105.65444
- USGS site number
- 401733105392404
- Records begin
- 1983-09-30 (43 years)
14-day flow forecast
Based on observations through for The Loch Outlet - Loch Vale. 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 |
|---|---|---|---|---|
| 2.8 | 3 | 3.3 | ||
| 2.6 | 3 | 3.4 | ||
| 2.5 | 3 | 3.7 | ||
| 2.4 | 2.9 | 3.7 | ||
| 2.3 | 2.8 | 3.6 | ||
| 2.2 | 2.9 | 3.9 | ||
| 2.2 | 3 | 4.1 | ||
| 2 | 2.8 | 3.8 | ||
| 2 | 2.7 | 3.6 | ||
| 1.8 | 2.6 | 3.5 | ||
| 1.7 | 2.5 | 3.3 | ||
| 1.8 | 2.6 | 3.6 | ||
| 1.8 | 2.6 | 3.8 | ||
| 1.5 | 2.5 | 3.6 |
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 42 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 | 0 | 0 | 0.4 | |
| February | 0 | 0 | 0.3 | |
| March | 0 | 0.4 | 0.4 | |
| April | 0.2 | 1.1 | 2.1 | |
| May | 3.1 | 7.8 | 16.3 | |
| June | 12.5 | 21.5 | 34.3 | |
| July | 11.1 | 15.9 | 26.6 | |
| August | 6 | 9.7 | 16 | |
| September | 2.8 | 4.7 | 8.5 | |
| October | 1.2 | 2 | 3.9 | |
| November | 0.4 | 1.1 | 1.3 | |
| December | 0.2 | 0.3 | 0.6 |
All values in cubic feet per second (cfs).
Common questions
- When does The Loch Outlet - Loch Vale normally run highest?
- June, on the long-term record. The median daily flow that month is about 21.5 cfs, against 0 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 The Loch Outlet - Loch Vale?
- It depends on the month. In January, half of days historically fall near 0 cfs, with the middle 80% of days between 0 and 0.4 cfs. The month-by-month table on this page gives the full range.
- How long has The Loch Outlet - Loch Vale been measured?
- Discharge records at USGS site 401733105392404 begin in 1983, about 43 years, covering roughly 9,127 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is The Loch Outlet - Loch Vale?
- The gauge sits at 40.29306, -105.65444, in Colorado, in hydrologic subbasin 10190006, draining roughly 3 square miles.
- Can I use The Loch Outlet - Loch Vale 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.