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Hydrograph River at a Glance  
Guadalupe River at Seguin Observed crest: 24.8 ft at 7:00pm Jul 20Observed: 6 ft at 7:00am Jul 11Observed: 6 ft at 7:46pm Jul 11Observed: 6 ft at 7:00am Jul 12Observed: 6 ft at 7:56pm Jul 12Observed: 6 ft at 7:00am Jul 13Observed: 2 ft at 7:00am Jul 14Observed: 5 ft at 5:50am Jul 15Observed: 5 ft at 7:00am Jul 15Observed: 6.5 ft at 7:30am Jul 15Observed: 4 ft at 8:45am Jul 15Observed: 3.5 ft at 12:30pm Jul 15Observed: 1 ft at 7:00am Jul 16Observed: 4 ft at 7:00am Jul 17Observed: 3 ft at 7:00am Jul 18Observed: 4 ft at 7:00am Jul 19Observed: 3 ft at 7:00am Jul 20Observed: 3 ft at 10:00am Jul 20Observed: 7 ft at 1:39pm Jul 20Observed: 13.5 ft at 2:50pm Jul 20Observed: 21 ft at 3:55pm Jul 20Observed: 24 ft at 5:00pm Jul 20Observed: 24.2 ft at 6:00pm Jul 20Observed: 24.8 ft at 7:00pm Jul 20Observed: 24 ft at 8:00pm Jul 20Forecast: 19.7 ft at 1:00am Jul 21Forecast: 14.9 ft at 7:00am Jul 21Forecast: 10.7 ft at 1:00pm Jul 21Forecast: 6.7 ft at 7:00pm Jul 21Forecast: 4.3 ft at 1:00am Jul 22Forecast: 2.7 ft at 7:00am Jul 22Forecast: 2 ft at 1:00pm Jul 22Forecast: 1.8 ft at 7:00pm Jul 22Forecast: 1.7 ft at 1:00am Jul 23Forecast: 1.7 ft at 7:00am Jul 23Forecast: 1.6 ft at 1:00pm Jul 23Forecast: 1.6 ft at 7:00pm Jul 23Forecast: 1.5 ft at 1:00am Jul 24Forecast: 1.5 ft at 7:00am Jul 24Forecast: 1.5 ft at 1:00pm Jul 24Forecast: 1.4 ft at 7:00pm Jul 24Forecast: 1.4 ft at 1:00am Jul 25Forecast: 1.4 ft at 7:00am Jul 25Graph Created (9:12pm Jul 20, 2007)ObservedForecast (issued 8:32pm Jul 20)SEGT2 (plotting HGIRZ)   Gage 0  Datum: 455.3 Latest observed value: 24 ft at 8:00 PM CDT 20-Jul-2007. Flood Stage is 19.0 ft.   Stage (ft)Flow (kcfs)
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NOTE: Forecasts for the Guadalupe River at Seguin are issued as needed during times of high water, but are not routinely available.

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Upstream Gauge Upstream Gauge -  below Comal River at New Braunfels Downstream Gauge -  at Gonzales Downstream Gauge

Flood Categories (in feet)
Major Flood Stage: 26
Moderate Flood Stage: 22
Flood Stage: 19
Action Stage: 4

Historical Crests
(1) 36.80 ft on 10/18/1998
(2) 35.50 ft on 06/16/1935
(3) 33.90 ft on 09/11/1952
(4) 33.00 ft on 01/01/1935
(5) 32.80 ft on 05/11/1972
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Low Water Records
Currently none available.

Guadalupe River at Seguin location map


Impacts Collapse
32.0 SEVERAL HOMES IN LOW AREAS OF THE FLOOD PLAIN IN SEGUIN ARE DESTROYED. SEVERAL TENS ARE SEVERELY DAMAGED. NEARLY ALL OF TREASURE ISLAND IN LAKE MCQUEENY IS UNDER WATER WITH HOMES SEVERELY FLOODED AND DAMAGED. LIVESTOCK IN THE FLOOD PLAIN ABOVE SEGUIN TO BELOW CUERO ARE CUT OFF AND POTENTIALLY DROWNED
29.0 WIDESPREAD DISASTROUS FLOODING DESTROYS LOWEST HOMES IN THE FLOOD PLAIN AND DAMAGES MANY MORE. NUMEROUS ROADS AND BRIDGES ARE SEVERELY FLOODED AND DANGEROUS
26.0 MAJOR FLOODING DAMAGES SEVERAL HOMES IN THE GLEN COVE SUBDIVISION AND DOWNSTREAM. NUMEROUS ROADS...STREETS AND BRIDGES ARE EXTREMELY DANGEROUS. LIVESTOCK SHOULD BE MOVED FROM THE FLOOD PLAIN IMMEDIATELY
22.0 MODERATE LOWLAND FLOODING THREATENS HOMES IN THE GLEN COVE SUBDIVDISION IN SEGUIN. ROADS AND LOW BRIDGES NEAR THE RIVER ARE FLOODED AND DANGEROUS. RUNOFF DOWN WALNUT BRANCH NORTHWEST OF DOWNTOWN THREATENS LOWEST HOMES AND APARTMENTS
19.0 MINOR LOWLAND FLOODING IS IN LOW AREAS OF THE FLOOD PLAIN APPROACHING BUT NOT REACHING LOWEST HOMES IN SEGUIN. RUNOFF DOWN WALNUT BRANCH NORTHWEST OF DOWNTOWN IS A THREAT TO LOWEST HOMES AND APARTMENTS

Other Data Sources:
Corps of Engineers (COE) Info for Seguin

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