Four Corner - Texas Water Development Board

As of November 24, 1998, correspondence from the TPWD Texas Biological
Conservation Data System office has not been received. To date, information
received by the USFWS and TPWD indicate that threatened and endangered
species of plants and animals are not considered to be a concern within the
confines of the study area.
All correspondence pertaining to threatened and endangered species is provided in
Appendix D of this report.
2.5. EXTENT OF FLOOD PLAIN IN AREA
As part of this investigation, the Federal Emergency Management Agency
(FEMA) National Flood Insurance Program Flood Insurance Rate Maps (FIRMs)
were evaluated for the study area. The FIRM panel 120 of 550, map number
48157C0120-H, dated September 30, 1992, and map number 48157C0120-J,
dated January 3, 1997, were reviewed for this project.
The northeastern-most corner of the study area boundary crosses the well defined
channel of Keegans Bayou at two locations. Keegans Bayou is designated as a
"Zone AE" area which consists of a special flood hazard area potentially
inundated by a 100-year flood. The 100-year flood is contained within the channel
of Keegans Bayou in this area according to the FIRMs reviewed during this
investigation. Zone AE specifically refers to areas of the 100-year flood in which
base flood elevations have been determined.
The southwestern-most corner of the study area is encompassed by a flood zone
associated with Red Gully, based on the FIRMs reviewed for this area. Red Gully
generally flows southeast and south within the boundaries of the study area and
then flows south/southeast into Oyster Creek. Oyster Creek flows into the Brazos
River which then flows into the Gulf of Mexico.
Four Corners Area Water and Wastewater Facilities Planning Study
Page 2-14
FINAL REPORT