104
FGUS84 KMAF 180119
RVSMAF
TXC043-377-190115-
HYDROLOGIC STATEMENT
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
819 PM CDT WED AUG 17 2022
...ABOVE BANKFULL BUT BELOW FLOOD STAGE LEVELS WERE OBSERVED ALONG
THE RIO GRANDE...
MULTIPLE ROUNDS OF HEAVY RAINFALL OVER THE PAST 24 HOURS HAVE
RESULTED IN RISES ALONG THE RIO GRANDE. RIVER LEVELS AT PRESIDIO 5SE
ARE EXPECTED TO REMAIN BELOW CRITERIA, AND CONTINUE TO FALL. LEVELS
AT CASTOLON ARE FORECAST TO BRIEFLY REACH MINOR FLOOD STAGE THIS
EVENING BEFORE FALLING, WITH RISES TO MINOR FLOOD ALSO POSSIBLE AT
JOHNSON RANCH BY THURSDAY MORNING. THE RIO GRANDE AT BOQUILLAS IS
EXPECTED TO EXPERIENCE MINOR RISES, BUT REMAIN BELOW FLOOD STAGE AS
WATER IS ROUTED DOWNRIVER.
FOR THE RIO GRANDE AT PRESIDIO 5SE
* THE LATEST STAGE WAS 4.8 FEET (1.5 METERS).
* IMPACTS AT 9.0 FEET (2.7 METERS) THE RIVER REACHES MINOR FLOOD
STAGE, AND LOW LYING AREAS BEGIN TO FLOOD.
FOR THE RIO GRANDE AT JOHNSON RANCH
* THE LATEST STAGE WAS 5.76 FEET (1.8 METERS).
* IMPACTS AT 15.0 FEET (4.6 METERS) FLOOD STAGE IS REACHED.
MODERATE LOWLAND FLOODING BEGINS. ROADS THAT LEAD TO COTTONWOOD
CAMPGROUND AND RIVER ROAD MAY FLOOD. STAGES ARE PRACTICALLY
SYNONYMOUS WITH THE GAGE AT COTTONWOOD CAMPGROUND AT CASTOLON
(CSTT2), AND THEREFORE REPRESENT THE REACH FROM SANTA ELENA CANYON
THROUGH COTTONWOOD CAMPGROUND, WHERE DAMAGE MAY OCCUR. CATTLE
ALSO GRAZE IN THE LOWLANDS, AND MAY BE THREATENED.
FOR THE RIO GRANDE AT CASTOLON
* THE LATEST STAGE WAS 13.87 FEET (4.2 METERS).
* IMPACTS AT 15.0 FEET (4.6 METERS) THE RIVER REACHES MINOR FLOOD
STAGE, AND LOWLAND FLOODING BEGINS. THE RIVER BEGINS TO FLOOD THE
ROAD BETWEEN SANTA ELENA CANYON AND COTTONWOOD CAMPGROUND IN BIG
BEND NATIONAL PARK. THE RIVER BEGINS TO FLOOD THE PARKING LOT AT
SANTA ELENA CANYON, AND CUT OFF THE NATURE TRAIL INTO THE CANYON.
CAMPERS IN COTTONWOOD CAMPGROUND NEED TO PREPARE FOR POSSIBLE
EVACUATIONS.
FOR THE RIO GRANDE AT BOQUILLAS
* THE LATEST STAGE WAS 3.36 FEET (1.0 METERS).
* IMPACTS AT 12.0 FEET (3.7 METERS) THE RIVER REACHES BANKFULL, AND
NO DAMAGE IS EXPECTED. PREPARATIONS MAY BE NECESSARY TO REMOVE
WATER PUMPS. THE PARK SHOULD BE NOTIFIED AT THIS TIME IF
ADDITIONAL RISES ARE EXPECTED SO THEY WILL HAVE TIME TO REMOVE THE
PUMPS.
CAUTION IS URGED WHEN WALKING NEAR RIVERBANKS.
ADDITIONAL STAGE INFORMATION AND FORECASTS IF AVAILABLE.
BELOW ARE THE LATEST RIVER STAGES AND FORECASTS (FEET):
FLD OBSERVED THU THU THU THU
LOCATION STG STG DAY/TIME 1AM 7AM 1PM 7PM
RIO GRANDE
PRESIDIO 5SE 9.0 4.8 WED 7PM 3.4 3.0 2.8 2.6
JOHNSON RANCH 15.0 5.8 WED 7PM 11.9 15.2 14.9 11.6
CASTOLON 15.0 13.9 WED 7PM 13.1 11.4 9.2 7.2
BOQUILLAS 13.0 3.4 WED 7PM 3.5 7.7 12.1 9.8
BELOW ARE THE LATEST RIVER STAGES AND FORECASTS (METERS):
FLD OBSERVED THU THU THU THU
LOCATION STG STG DAY/TIME 1AM 7AM 1PM 7PM
RIO GRANDE
PRESIDIO 5SE 2.7 1.5 WED 7PM 1.0 0.9 0.9 0.8
JOHNSON RANCH 4.6 1.8 WED 7PM 3.6 4.6 4.5 3.5
CASTOLON 4.6 4.2 WED 7PM 4.0 3.5 2.8 2.2
BOQUILLAS 4.0 1.0 WED 7PM 1.1 2.3 3.7 3.0
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