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Guadalupe Riverat Gonzales, TX (Gauge GNLT2)
Observation History | Stage Impacts/Record Events
Stages:
Normal
Action
Flood
Moderate Flood
Major Flood
River Stage Data for Gauge GNLT2
Normal Stage: 11.7 ft
Flow: 223 kcfs*
(impacts and historical events)
Action Stages:
17': Action
31': Flood
37': Moderate Flood
43': Major Flood
Gauge GNLT2 History chart | graph
Stage Date CST Stage ft Flow kcfs
CURRENT 01/08/2009 01:45 am 11.70 0.499
  01/08/2009 01:30 am 11.72 0.509
  01/08/2009 01:15 am 11.72 0.509
  01/08/2009 01:00 am 11.72 0.509
  01/08/2009 12:45 am 11.73 0.515
  01/08/2009 12:30 am 11.74 0.520
  01/08/2009 12:15 am 11.76 0.531
  01/08/2009 12:00 am 11.77 0.536
  01/07/2009 11:45 pm 11.78 0.542
  01/07/2009 11:30 pm 11.79 0.547
  01/07/2009 11:15 pm 11.80 0.553
  01/07/2009 11:00 pm 11.82 0.564
  01/07/2009 10:45 pm 11.82 0.564
  01/07/2009 10:30 pm 11.84 0.574
  01/07/2009 10:15 pm 11.85 0.580
  01/07/2009 10:00 pm 11.85 0.580
  01/07/2009 09:45 pm 11.84 0.574
  01/07/2009 09:30 pm 11.84 0.574
  01/07/2009 09:15 pm 11.84 0.574
  01/07/2009 09:00 pm 11.84 0.574
  01/07/2009 08:45 pm 11.84 0.574
  01/07/2009 08:30 pm 11.83 0.569
  01/07/2009 08:15 pm 11.83 0.569
  01/07/2009 08:00 pm 11.84 0.574
  01/07/2009 07:45 pm 11.83 0.569
  01/07/2009 07:30 pm 11.83 0.569
  01/07/2009 07:15 pm 11.82 0.564
  01/07/2009 07:00 pm 11.82 0.564
  01/07/2009 06:45 pm 11.82 0.564
  01/07/2009 06:30 pm 11.82 0.564
  01/07/2009 06:15 pm 11.81 0.558
Flood Impacts and Historical Events
Stage Impacts
48.0FLOW PASSES THROUGH THE WINDOWS OF THE OLD POWER PLANT. ALL HIGHWAYS INTO TOWN ARE FLOODED EXCEPT HIGHWAY 87 NORTH. NEARLY ALL OF THE CITY PARK IS UNDER SEVERAL FEET OF WATER. THE FLOOD PLAIN NORTHWEST OF TOWN BELOW THE GUADALUPE-SAN MARCOS RIVERS CONFLUENCE IS SEVERAL MILES WIDE. LOWEST HOMES ALONG MILES OF TINSLEY CREEK ARE FLOODED AS THE GUADALUPE RIVER BACKS INTO IT
45.0FLOW REACHES THE FLOOR OF THE OLD POWER PLANT AND TO THE SLAB OF THE ELECTRIC PLANT. WATER IS SEVERAL FEET DEEP IN THE BASEBALL AND CONCESSION BUILDINGS IN THE CITY PARK. FLOODING IS SEVERAL MILES WIDE IN THE FLOOD PLAIN JUST NORTHWEST OF GONZALES. FLOW APPROACHES LOWER HOMES IN THE TINSLEY CREEK FLOOD PLAIN IN GONZALES AS THE GUADALUPE RIVER BACKS UP. ANY FLOW DOWN TINSLEY CREEK OVER THE BACKFLOW CAN FLOOD HOMES
43.0MAJOR FLOODING CLOSES HIGHWAYS 183...97 AND FM 108. RUNOFF DOWN TINSLEY CREEK IN GONZALES ADDED TO THE GUADALUPE RIVER BACKWATER CAN FLOOD LOWEST HOMES NEAR THE CREEK. SECONDARY ROADS AND STREETS NEAR THE RIVER ARE FLOODED AND DANGEROUS TO MOTORISTS
40.0MODERATE LOWLAND FLOODING INUNDATES A LARGE AREA OF PASTURELAND NORTHWEST OF GONZALES BETWEEN THE GUADALUPE AND SAN MARCOS RIVERS. HIGHWAY 183 HAS WATER GOING OVER THE BRIDGE...LIKELY CLOSING THE HIGHWAY. MUCH OF THE CITY PARK IN GONZALES IS FLOODED WITH LOWEST AREAS UP TO 9 FEET. MANY SECONDARY ROADS IN THE FLOOD PLAIN ARE FLOODED AND CLOSED
37.0MODERATE LOWLAND FLOODING INUNDATES PASTURE AND CROPLAND BETWEEN THE GUADALUPE/SAN MARCOS RIVER CONFLUENCE AND GONZALES. SECONDARY ROADS...LOW BRIDGES AND MUCH OF THE CITY PARK AND FACILITIES NEAR THE RIVER IN GONZALES ARE FLOODED
34.0PASTURELAND NORTHWEST OF GONZALES BETWEEN THE GUADALUPE AND SAN MARCOS RIVERS IS FLOODED. LOWEST AREAS OF THE CITY PARK FLOOD
31.0MINOR LOWLAND FLOODING BEGINS TO ENTER THE GONZALES CITY PARK
Historical Crests Record Lows
1) 50.44 ft on 10/18/1998
2) 50.43 ft on 05/29/1929
3) 43.97 ft on 11/23/2004
4) 42.24 ft on 07/07/2002
5) 40.53 ft on 03/13/2007
6) 40.25 ft on 07/22/2007
7) 39.19 ft on 11/17/2001
8) 38.80 ft on 06/24/1997
9) 38.20 ft on 07/01/1936
10) 38.10 ft on 12/04/1913
Low water records are unavailable.

Data provided by NOAA Advanced Hydrologic Prediction Service

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