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Gulkana Riverat Sourdough, AK (Gauge GRSA2)
Observation History | Stage Impacts/Record Events
Stages:
Normal
Action
Flood
Moderate Flood
Major Flood
River Stage Data for Gauge GRSA2
Normal Stage: 6.79 ft
Flow: 1.78 kcfs*
(impacts and historical events)
Action Stages:
9.5': Action
11': Flood
12': Moderate Flood
Major Flood
Gauge GRSA2 History chart | graph
Stage Date CST Stage ft Flow kcfs
CURRENT 02/16/2012 04:15 am 6.79 1.780
  02/16/2012 04:00 am 6.79 1.780
  02/16/2012 03:45 am 6.79 1.780
  02/16/2012 03:30 am 6.79 1.780
  02/16/2012 03:15 am 6.79 1.780
  02/16/2012 03:00 am 6.79 1.780
  02/16/2012 02:45 am 6.79 1.780
  02/16/2012 02:30 am 6.79 1.780
  02/16/2012 02:15 am 6.79 1.780
  02/16/2012 02:00 am 6.79 1.780
  02/16/2012 01:45 am 6.79 1.780
  02/16/2012 01:30 am 6.80 1.790
  02/16/2012 01:15 am 6.79 1.780
  02/16/2012 01:00 am 6.79 1.780
  02/16/2012 12:45 am 6.79 1.780
  02/16/2012 12:30 am 6.80 1.790
  02/16/2012 12:15 am 6.79 1.780
  02/16/2012 12:00 am 6.80 1.790
  02/15/2012 11:45 pm 6.80 1.790
  02/15/2012 11:30 pm 6.80 1.790
  02/15/2012 11:15 pm 6.80 1.790
  02/15/2012 11:00 pm 6.79 1.780
  02/15/2012 10:45 pm 6.79 1.780
  02/15/2012 10:30 pm 6.79 1.780
  02/15/2012 10:15 pm 6.79 1.780
  02/15/2012 10:00 pm 6.79 1.780
  02/15/2012 09:45 pm 6.80 1.790
  02/15/2012 09:30 pm 6.80 1.790
  02/15/2012 09:15 pm 6.80 1.790
  02/15/2012 09:00 pm 6.80 1.790
  02/15/2012 08:45 pm 6.80 1.790
Flood Impacts and Historical Events
Stage Impacts
12.5Stage associated with flow (16900 cfs) having a recurrence interval of >50 years; major flooding would be expected on this and nearby streams
12.0Stage associated with flow (15200 cfs) having a recurrence interval of 20-40 years; moderate flooding would be expected on this and nearby streams
11.0Stage associated with a flow (11900 cfs) having a recurrence interval of ~10 years; minor flooding would be expected on this and nearby streams
9.5Bankfull -- stage associated with flow (7400 cfs) having a recurrence interval of ~2 years
Historical Crests Record Lows
1) 16.03 ft on 05/07/1976
2) 12.00 ft on 10/10/2006
3) 11.26 ft on 09/12/1990
4) 11.05 ft on 05/04/2009
5) 10.88 ft on 05/04/1989
Low water records are unavailable.

Data provided by NOAA Advanced Hydrologic Prediction Service

Created with HAMweather 4 Alpha 3
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