Advanced Hydrologic Prediction Service: Austin/San Antonio: Colorado River at Bastrop
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Advanced Hydrologic Prediction Service

Colorado River at Bastrop, TX (BRTT2)

Data Type




Inundation Levels
NAVD88

351.644.0
350.643.0
349.642.0
348.641.0
347.640.0
346.639.0
345.638.0
344.637.0
343.636.0
342.635.0
341.634.0
340.633.0
339.632.0
338.631.0
337.630.0
336.629.0
335.628.0

Major Flooding Begins

334.627.0
333.626.0
332.625.0

Moderate Flooding Begins

331.624.0
330.623.0

Flooding Begins

329.622.0


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Weather Forecast Office Austin/San Antonio, TX West Gulf River Forecast Center

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Hydrograph River at a Glance Download Inundation
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Current Stage: 2.3 ft at 21:00 UTC 01/15
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NAVD88: N/A ft
Stage: N/A ft

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Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.

North Arrow Flood Categories (in feet)
Major Flood Stage:28
Moderate Flood Stage:25
Flood Stage:23
Action Stage:14
Below Flood Stage:

USGS Gauge Location USGS Gauge Location

Extent of Inundation Study Boundaries Extent of Inundation Study Boundaries

Historical Crests
(1) 60.30 ft on 07/07/1869
(2) 57.00 ft on 06/16/1935
(3) 53.30 ft on 12/04/1913
(4) 37.48 ft on 12/22/1991
(5) 34.45 ft on 10/29/1960
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Impacts Collapse
37.0 WIDESPREAD DISASTROUS FLOODING IS TO THE ROOFS OF THE LOWEST HOMES IN THE DOTY RIVER...HIDDEN VALLEY...AND PECAN SHORES SUBDIVISIONS ABOVE SMITHVILLE. FLOW APPROACHES THE LOWEST HOMES AND THE GOLF COURSE FACILITIES IN BASTROP. ROADS AND BRIDGES NEAR THE RIVER ARE EXTREMELY DANGEROUS
35.0 DISASTROUS FLOODING SEVERELY FLOODS HOMES BETWEEN BASTROP AND SMITHVILLE IN THE DOTY RIVER...HIDDEN VALLEY...AND PECAN SHORES SUBDIVISIONS. LIVESTOCK ARE EXTREMELY VULNERABLE IN THE FLOOD PLAIN. ROADS AND BRIDGES FLOOD SEVERELY AND ARE VERY DANGEROUS. FLOW THREATENS LOWEST HOMES NEAR BASTROP AND FACILITIES AND LOWEST AREAS OF THE GOLF COURSE IN BASTROP
33.0 DISASTROUS FLOODING SEVERELY DAMAGES THE DOTY RIVER...HIDDEN VALLEY...AND PECAN SHORES SUBDIVISIONS ABOVE SMITHVILLE. ROADS AND BRIDGES NEAR THE RIVER ARE VERY DANGEROUS
31.0 DISASTROUS FLOODING REACHES MANY HOMES BETWEEN BASTROP AND SMITHVILLE IN THE DOTY RIVER...HIDDEN VALLEY AND PECAN SHORES SUBDIVISIONS. ROADS AND BRIDGES IN THE FLOOD PLAIN ARE VERY DANGEROUS. LIVESTOCK SHOULD BE MOVED FROM THE FLOOD PLAIN
29.0 LOWEST HOMES IN THE DOTY RIVER...HIDDEN VALLEY AND PECAN SHORES SUBDIVISIONS ABOVE SMITHVILLE FLOOD. MANY PRIMARY AND SECONDARY ROADS AND BRIDGES FLOOD AND ARE VERY DANGEROUS TO MOTORISTS. LIVESTOCK AND EQUIPMENT SHOULD BE MOVED FROM THE FLOOD PLAIN
28.0 MAJOR FLOODING REACHES LOWEST HOMES DOWNSTREAM ABOVE SMITHVILLE IN THE DOTY RIVER...PECAN SHORES...AND HIDDEN VALLEY ESTATE SUBDIVISIONS. LOW ROADS AND BRIDGES NEAR THE RIVER FLOOD AND ARE VERY DANGEROUS TO MOTORISTS
27.0 MODERATE LOWLAND FLOODING BELOW AUSTIN TO BELOW SMITHVILLE THREATENS HOMES ABOVE SMITHVILLE IN THE DOTY RIVER...HIDDEN VALLEY...AND PECAN SHORES ESTATES SUBDIVISIONS. LIVESTOCK SHOULD BE MOVED FROM VULNERABLE AREAS OF THE FLOOD PLAIN. LOW ROADS AND BRIDGES IN THE FLOOD PLAIN ARE FLOODED AND DANGEROUS TO MOTORISTS
25.0 MODERATE LOWLAND FLOODING REACHES BOTTOMLANDS ABOVE BASTROP NEAR THE COLORADO RIVER AND PINEY AND WILBARGER CREEK CONFLUENCES. WATER BEGINS TO ENTER THE CITY PARK AND OFFICIALS WILL CLOSE THE PARK.
23.0 MINOR LOWLAND FLOODING REACHES LOWEST AREAS OF THE FLOOD PLAIN. SECONDARY ROADS AND LOW BRIDGES ARE FLOODED
20.0 FLOW EXCEEDS BANKFULL INTO LOWEST AREAS OF THE FLOOD PLAIN
18.0 FLOW EXCEEDS BANKFULL INTO LOWEST AREAS OF THE FLOOD PLAIN
16.0 FLOW EXCEEDS BANKFULL INTO LOWEST AREAS OF THE FLOOD PLAIN
14.0 FLOW EXCEEDS LOW SECTIONS OF THE BANKS

Other Data Sources:
U.S. Geological Survey (USGS) Data and Site Info for Bastrop

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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.

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National Weather Service
Austin/San Antonio Weather Forecast Office
2090 Airport Rd.
New Braunfels, TX 78130
(830) 606-3617
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Page last modified: 18-Sep-2008 4:37 PM
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