Tolt River Flooding Information
USGS gage data, map, alert
phases, and recent high flows
» Tolt River Basin Weather Stations
» River Conditions for Mobile Devices
» King County Flood Alerts
| USGS Gage Name |
Time, Date |
Stage
(feet) |
Flow
(c.f.s.) |
Flow Change
(c.f.s./hr) |
| North Fork Tolt River near Carnation (external link) |
6:15 PM, 11/21/2009 |
5.26 |
601 |
-4 |
| South Fork Tolt River near Carnation (external link) |
5:30 PM, 11/21/2009 |
1.91 |
67 |
-1 |
| Tolt River near Carnation (external link) |
6:15 PM, 11/21/2009 |
6.42 |
1160 |
-10 |
Notes:
This data was requested from USGS at 11/21/2009 6:32:40 PM. The next request for USGS data is expected in approximately 1 minutes from when this page was loaded. King County provides funding to the United States Geological Survey (USGS) to support the operation and maintenance of river and stream gages and related systems. The term "gage" is defined as an instrument for measuring or testing. USGS uses the term "streamgage" to describe their equipment that obtains estimates of the amount of water flowing in streams and rivers. More information about USGS streamgages
|
| Flood Phase Information |
| Phase |
Flow at Tolt River gage near Carnation |
Description |
Condition |
| 1 |
1500 c.f.s. |
Internal Alert |
|
| 2 |
2500 c.f.s. |
Minor Flooding |
San Souci area homes may be inaccessible and experience high
water depths and velocities. Tolt River Rd and some driveways may overtop. |
| 3 |
4500 c.f.s. |
Moderate Flooding |
Increased water depth and velocity in San Souci and other areas. |
| 4 |
7000 c.f.s. |
Major Flooding |
Levees may overtop near Carnation. Channel changes may occur. |
Recent High Flow Data:
Tolt River near Carnation |
| January 8, 2009 |
17,900 c.f.s.*
|
| November 12, 2008 |
11,800 c.f.s.*
|
| November 6, 2006 |
10,500 c.f.s.
|
| January 18, 2005 |
7,090 c.f.s. |
| October, 2003 |
11,100 c.f.s. |
| December, 1999 |
11,800 c.f.s. |
| February, 1996 |
10,300 c.f.s. |
| November, 1995 |
11,400 c.f.s. |
| November, 1990 |
11,200 c.f.s. |
*provisional data
More Tolt River Flood Information
Flood Photo Viewer
Video of the Election Day Flood, November, 2006:
Photos of
phase 4 flood, November, 2006
Lower Tolt River Floodplain
Restoration Project
Snoqualmie River Flooding Information
» Return to the The Flood Warning System
Page
» Visit King County Flooding Services
