Tonsina River at the Richardson Hwy near Tonsina
Critical Stages
11.5' - Action
12.5' - Flood
13' - Moderate
Major
Latest Observation
Updated: 3:00 PM AKST 12/17/25
Status: No Flooding
Stage: 8.08 ft
Flow: 0.627 kcfs
Forecast
Forecast not available for this location.
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 3:00 PM 12/17 | 8.08 | 0.627 |
| 3:00 PM 12/16 | 8.11 | 0.646 |
| 3:00 PM 12/15 | 8.08 | 0.627 |
| 3:00 PM 12/14 | 8.12 | 0.652 |
| 3:00 PM 12/13 | 8.14 | 0.665 |
| 3:00 PM 12/12 | 8.13 | 0.658 |
| 3:00 PM 12/11 | 8.09 | 0.633 |
| 3:00 PM 12/10 | 8.1 | 0.64 |
| 3:00 PM 12/9 | 8.1 | 0.64 |
| 5:00 PM 12/8 | 8.13 | 0.658 |
| 3:00 PM 12/7 | 8.16 | 0.677 |
| 3:00 PM 12/6 | 8.18 | 0.69 |
| 5:00 PM 12/5 | 8.21 | 0.709 |
| 3:00 PM 12/4 | 8.02 | 0.588 |
| 5:00 PM 12/3 | 8 | 0.576 |
| 3:00 PM 12/2 | 7.99 | 0.57 |
| 3:00 PM 12/1 | 8.03 | 0.595 |
| 5:00 PM 11/30 | 7.82 | 0.477 |
| 3:00 PM 11/29 | 7.67 | 0.413 |
| 3:00 PM 11/28 | 7.68 | 0.416 |
| 3:00 PM 11/27 | 7.67 | 0.413 |
| 3:00 PM 11/26 | 7.67 | 0.413 |
| 3:00 PM 11/25 | 7.6 | 0.387 |
| 3:00 PM 11/24 | 7.49 | 0.35 |
| 3:00 PM 11/23 | 7.25 | 0.272 |
| 5:00 PM 11/22 | 7.27 | 0.278 |
| 3:00 PM 11/21 | 7.27 | 0.278 |
| 10:00 PM 11/20 | 7.29 | 0.285 |
| 8:15 PM 11/19 | 7.29 | 0.285 |
| 3:00 PM 11/18 | 7.3 | 0.288 |
25.5' -
Bridge Low Cord
12' -
High water level -- Class IV whitewater in Tonsina River canyon
11.5' -
Bankfull -- stage associated with a flow (5100 cfs) having a recurrence interval of ~2 years
10' -
Medium water level -- Class III+ whitewater in Tonsina River canyon
9' -
Low water level -- Class III whitewater in Tonsina River canyon
| Date | Stage (ft) |
|---|---|
| Oct 11, 2006 | 14.57 |
| Jun 30, 2000 | 13.44 |
| Jun 25, 2001 | 13.23 |
| Jun 9, 1998 | 13 |
| Sep 22, 1995 | 13 |
| Jul 5, 1992 | 12.81 |
| Jul 7, 1988 | 12.75 |
| Jul 4, 1985 | 12.6 |
| Jun 18, 1994 | 12.5 |
| Jun 8, 1990 | 12.45 |
| Jul 7, 1986 | 12.4 |
| Jun 19, 1999 | 12.26 |
| Jul 7, 1987 | 12.26 |
| Jun 23, 1991 | 12.22 |
| Jun 5, 1993 | 12.18 |
| Jun 20, 2005 | 12.17 |
| Jun 25, 1984 | 12.16 |
| Jun 25, 2012 | 12.15 |
| Aug 14, 1997 | 12.05 |
| Jul 3, 1989 | 11.95 |
Data provided by the National Weather Service.
