Four Corner - Texas Water Development Board

some concrete pavements with curb and gutter were also observed in the area. The pavements
and structures in the area appeared to be in good condition. A north-south drainage ditch that
appears to be part of the upstream section of Red Gully crosses Oleta Lane under a wooden
bridge approximately 1500 feet west of Old Richmond Rd. Adjacent the west side of the
drainage ditch is a levee that turns west about 150 feet north of Oleta Lane and then forms the
northern border for residential properties on the north side and west end of Oleta Lane. Another
notable feature in the area is an east-west easement located just south of Bissonnet that contains a
power transmission line and buried pipelines.
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Cummings Road Area
Land use in this sub-area is predominantly rural residential. Several of the lots are vacant or
being used for horse grazing or gardening. Other properties in the area are used for large scale
crop farming. No notable commercial or industrial structures along with schools were observed.
Streets in the area are asphalt pavements with roadside drainage ditches and overhead power
lines. The overhead lines also appear to carry telephone and cable utilities. The streets and other
structures in the area appeared to be in good condition. An east-west easement containing an
overhead power transmission line crossed the area just south of Cay Rd. The easement turned
and followed a north-south alignment just west of Rustic.
SUMMARY OF FINDINGS/CONCLUSIONS
Based on our site reconnaissance and review of available information obtained for this project,
our findings and conclusions are summarized below:
Findings
• The project areas are located in northeast and central Fort Bend County, Texas in
rural settings with mostly rural home sites and undeveloped land.
• The northern and eastern part of the Four Comers area is located on the Beaumont
Formation which consists primarily of clays with interbedded sands and silts. The
southern part is located on Quaternary alluvial deposits of the Brazos River floodplain
and the Oyster Creek floodplain. Since the present day Brazos River is located in the
southern part of the floodplain, soils in the southern and western parts of the Four
Comers area may be slightly sandier than those located on the Beaumont Formation.
However, clay bearing soils should predominate over most of the Four Comers area.
• The Cummings Road area is located entirely within the Quaternary alluvial deposits
of the present day Brazos River, which borders the site to the south. The broad bend
of the river south of the area suggests that the site should be underlain by point bar
deposits which were laid down as the river's meander migrated south through the
area. Sands and gravels should be present to depths up to 60 feet with interbedded
clay lenses which represent interchannel deposits of the pre-historic Brazos River.
• Two active geologic faults are located north and east of the Four Comers area. The
Clodine Fault crosses FM 1464 about 1500 feet northwest of the northwest comer of
the Four Comers area. The Renn Scarp has been mapped about 2000 feet east of the
site. Neither of the two faults are known to cross the site. No active faults are known
to be present in the Cummings Road area. Site reconnaissance did not reveal
evidence of active faulting.
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