Alamosa River Flow Today
As of October 9, 2026 at 1:15 AM, the Alamosa River is flowing at 52 cfs above Terrace Reservoir, CO — 175% of normal for the date and down 7% in 24 hours. 2 of 3 USGS gauges reported in the last 3 days; flows range from 40 to 52 cfs. ❤ Favorite
Alamosa River map
See the Alamosa River on a live map
Every gauge, dam and paddle run on the river, one tap each:
- Gauges now — which reaches are high or low
- Dams & paddle runs — storage and what’s in range
- Rain — past 24 hrs and the 72-hr forecast, press play
✓ Free for 7 days · ✓ Cancel anytime
Alamosa River conditions today
Where the river is running versus normal, what’s rising or dropping, and what it means for a trip — built from the live USGS readings below.
At Terrace Reservoir, the Alamosa River is running 52 cfs — 175% of normal, down 7% since yesterday. Along the river, 1 of 2 reporting gauges are near normal (the typical gauge is at 140% of normal).
In the last 24 hours the river is dropping at Terrace Reservoir (-26%).
How the Alamosa River compares to normal
Every reporting gauge from the top of the river to the bottom: bar length is today’s flow, colour is percent of normal for the date.
Flow along the river, upstream to downstream
- Terrace Reservoir8,621 ft 52 cfs175%
- Terrace Reservoir8,400 ft 40 cfs105%
Bar length uses a square-root scale so small headwater flows stay visible next to big downstream ones. Colour: <50% 50–90 90–110 110–150 150%+ of normal.
Where every gauge sits
One dot per Alamosa River streamgauge, placed by its own percent of normal. The line is the typical gauge (140%).
Alamosa River flow report
| Streamgage | Streamflow | % of normal | 24h | Gage height | Elevation |
|---|---|---|---|---|---|
|
Alamosa River Above Wightman Fork Near Jasper CO
Last reported Jul 19 · USGS 08235250 |
-999 cfs | · | · | 0.66 ft | 9,403 ft |
|
Alamosa River Above Terrace Reservoir CO
Oct 9, 1:15 AM · USGS 08236000 |
52 cfs | 175% | -7% | 0.71 ft | 8,621 ft |
|
Alamosa River Below Terrace Reservoir CO
Oct 9, 1:30 AM · USGS 08236500 |
40 cfs | 105% | -26% | 2.57 ft | 8,400 ft |
USGS provisional data. Readings are in each gauge’s local time; gauges silent for more than 3 days are marked “Last reported”. Tap any gauge for its hydrograph, forecast and history.
Dams & reservoirs on the Alamosa River
Releases from these dams shape the flow downstream. Tap one for its daily level and history.
Alamosa River streamflow over time
Daily total flow across every monitored gauge on the river.
Maximum streamflow by year
Alamosa River
The Alamosa River is a tributary of the Rio Grande in southern Colorado. It stretches 50 miles from its headwaters in the San Juan Mountains to its confluence with the Rio Grande. Historically, the river was used for gold mining and agriculture, but today, it is primarily used for recreation, including fishing and kayaking. The river's hydrology is heavily influenced by snowmelt, which can cause significant flooding during the spring and early summer. There are several reservoirs and dams on the Alamosa River, including Terrace Reservoir and Platoro Reservoir. These reservoirs were built for irrigation purposes and to manage the river's flow for flood control. Despite the use of the river for recreation and agriculture, efforts are being made to improve water quality and habitat for fish and wildlife.
Fishing near the Alamosa River
About the Alamosa River
How is the Alamosa River flowing right now?
As of October 9, 2026, the Alamosa River is flowing at 52 cfs above Terrace Reservoir, CO, about 175% of normal for the date. Across its 3 USGS gauges, current flows range from 40 to 52 cfs. Every gauge’s live reading is in the table above.
Is the Alamosa River running high or low?
The typical gauge on the Alamosa River is at 140% of normal for the date. Above 100% means higher than the historical average for this calendar day; below 100% means lower. The profile above shows which reaches are high or low.
Where does the data come from?
Discharge and gage height are from the USGS National Water Information System; flood stages from the National Weather Service. The history chart sums every monitored gauge on the river.
Can I get alerts for a gauge?
Yes — open any gauge from the table, favorite it in the Snoflo app and set a flow threshold.