Water Planning Data for Region K (Lower Colorado)

Barton Creek - From the confluence with Town Lake in Austin in Travis County upstream to FM 12 in Hays County (TNRCC classified stream segment 1430).

High water quality/exceptional aquatic life/high aesthetic value - ecoregion stream; high water quality, diverse benthic macroinvertebrate community (Bayer et al., 1992 and Davis, 1998)
Threatened or endangered species/unique communities - only known location of Barton Springs salamander (Fed.E/St.E) (Bauer et al., 1991)

Blanco River - From the Blanco/Hays County line to the Blanco/Kendall County line (within TNRCC classified stream segment 1813).

Riparian conservation area - Blanco State Park
High water quality/exceptional aquatic life/high aesthetic value - high water quality and exceptional aquatic life use (TNRCC, 1996)

Big Boggy Creek - From the confluence with the Gulf Intracoastal Waterway (GIWW) in Matagorda County upstream to its headwaters in Matagorda County.

Riparian conservation area - Big Boggy National Wildlife Refuge

Bull Creek - From the confluence with Lake Austin in Austin in Travis County upstream to its headwaters west of Jollyville in north central Travis County.

Biological function - nearly pristine stream with a largely intact riparian area displays significant overall habitat value
Hydrologic function - largely intact riparian area perfforms valuable hydrologic function relating to flood attenuation
Riparian conservation area - Bull Creek Preserve
High water quality/exceptional aquatic life/high aesthetic value - high aesthetic value; diverse benthic macroinvertebrate community (D. Bowles, 1999, pers. comm.)
Threatened or endangered species/unique communities - Jollyville Plateau salamander (D. Bowles, 1999, pers. comm.)

Cedar Lake Creek - From the confluence with the Gulf Intracoastal Waterway in Brazoria County upstream to FM 521 on Brazoria/Matagorda County line.

Biological function - undredged bayou with extensive forest and wetlands on border display significant overall habitat value (A. Sipocz, 1999, pers. comm.; S. Smith, 1999, pers. comm.)
Riparian conservation area - San Bernard National Wildlife Refuge
Threatened or endangered species/unique communities - Reddish egret (SOC/St.T), Wood stork (SOC/St.T), Brown pelican (Fed.E/St.E), White-faced ibis (SOC/St.T) (USFWS, 1999b)

Colorado River - From the Lampasas/San Saba/Burnet County line upstream to the Brown/Mills/San Saba/McCulloch County line (within TNRCC classified stream segments 1409 and 1410).

Biological function - Texas Natural Rivers System nominee (NPS, 1995);
Riparian conservation area - Colorado Bend State Park
High water quality/exceptional aquatic life/high aesthetic value - exceptional aesthetic value (NPS, 1995)
Threatened or endangered species/unique communities - Concho water snake (Fed.T/St.T) (USFWS, 1987); very rare, endemic Texas fawnsfoot freshwater mussel and one of only four known remaining populations of endemic Texas pimpleback freshwater mussel (Howells, 1999)

Colorado River - From SH 71 in La Grange in Fayette County upstream to Longhorn Dam in Travis County (TNRCC classified stream segments 1434 and 1428).

High water quality/exceptional aquatic life/high aesthetic value - exceptional aquatic life use (TNRCC, 1996)
Threatened or endangered species/unique communities - Blue sucker (SOC/St.T) (Mosier and Ray, 1992)

Colorado River - From a point 1.3 miles downstream of the Missouri-Pacific Railroad in Matagorda County upstream to SH 71 in La Grange in Fayette County (TNRCC classified stream segment 1402).

Threatened or endangered species/unique communities - Blue sucker (SOC/St.T) (Mosier and Ray, 1992)

Colorado River - From the confluence with West Matagorda Bay in Matagorda County to a point 1.3 miles downstream of the Missouri-Pacific Railroad in Matagorda County (TNRCC classified stream segment 1401).

Biological function - extensive freshwater and estuarine wetland habitats display significant overall habitat value (Bauer et al., 1991; NWI, 1999).

Cummins Creek - From the confluence with the Colorado River in Colorado County upstream to SH 159 in Fayette County.

High water quality/exceptional aquatic life/high aesthetic value - ecoregion stream; diverse benthic macroinvertebrate and fish communities (Bayer et al., 1992; Linam et al., 1999); exceptional aquatic life use (TNRCC, 2000)

Gorman Creek - From the confluence with the Colorado River upstream to its headwaters in San Saba County.

Riparian conservation area - Colorado Bend State Park

Llano River - From the confluence with Johnson Creek upstream to FM 2768 near Castell in Llano County.

Hydrologic function - valuable hydrologic function relating to groundwater discharge of the Edwards Aquifer (Brune, 1981)
High water quality/exceptional aquatic life/high aesthetic value - high aesthetic value (Belisle and Josselet, 1974)
Threatened or endangered species/unique communities - genetic refuge for pure strain Guadalupe bass (SOC) (G. Garrett, 1999, pers. comm.)

Little Barton Creek - From the confluence with Barton Creek three miles southeast of Bee Caves in Travis County upstream to its headwaters four miles east of Shingle Hills in west Travis County.

High water quality/exceptional aquatic life/high aesthetic value - ecoregion stream; diverse benthic macroinvertebrate community (Bayer et al., 1992)

Little Blanco River - From the Blanco/Comal County line upstream to its headwaters near Twin Sisters in the southern part of Blanco County.

High water quality/exceptional aquatic life/high aesthetic value - ecoregion stream; high water quality, diverse benthic macroinvertebrate community (Bayer et al., 1992)

Oatmeal Creek - From the confluence with the San Gabriel River three miles southeast of Bertram in Burnet County upstream to its headwaters located 6.5 miles southeast of Burnet in east Burnet County.

High water quality/exceptional aquatic life/high aesthetic value - ecoregion stream; diverse benthic macroinvertebrate community (Bayer et al., 1992)

Onion Creek - From the confluence with the Colorado River in Travis County to the most upstream crossing of FM 165 in Blanco County (TNRCC classified stream segment 1427).

Riparian conservation area - McKinney Falls State Park
High water quality/exceptional aquatic life/high aesthetic value - ecoregion stream; high water quality, diverse benthic macroinvertebrate community (Bayer et al., 1992)

Pedernales River - From a point immediately upstream of the confluence of Fall Creek in Travis County to FM 385 in Kimble County (TNRCC classified stream segment 1414).

Biological function - National Wild and Scenic Rivers System nominee for outstandingly remarkable wildlife values and significant natural areas (NPS, 1995)
Riparian conservation area - Pedernales Falls State Park; Stonewall Park; LBJ State Park; LBJ National Park
High water quality/exceptional aquatic life/high aesthetic value - exceptional aesthetic value (NPS, 1995)

Rocky Creek - From the confluence with the Lampasas River 0.5 mile northeast of Oakalla in Burnet County upstream to the union of North and South Rocky creeks 4.5 miles southwest of Oakalla in the northeastern corner of Burnet County.

High water quality/exceptional aquatic life/high aesthetic value - ecoregion stream; high water quality, diverse benthic macroinvertebrate and fish communities (Bayer et al., 1992; Linam et al., 1999)

References

Bauer, J., R. Frye, B. Spain. 1991. A natural resource survey for proposed reservoir sites and selected stream segments in Texas. Texas Parks and Wildlife Department, Austin, Texas.

Bayer, C.W., J.R. Davis, S.R. Twidwell, R. Kleinsasser, G. Linam, K. Mayes, and E. Hornig. 1992. Texas aquatic ecoregion project: an assessment of least disturbed streams (draft). Texas Water Commission, Austin, Texas.

Bowles, D. 1999. Personal communication. Texas Parks and Wildlife Department, San Marcos, Texas.

Davis, J.R. 1998. Personal communication. Texas Natural Resource Conservation Commission, Austin, Texas.

Garrett, G. 1999. Personal communication. Texas Parks and Wildlife Department, Ingram, Texas.

Howells, B. 1999. Personal communication. Texas Parks and Wildlife Department, Ingram, Texas.

Linam, G.W., L.J. Kleinsasser, and K. Mayes. 1999. Regionalization of the index of biotic integrity for Texas streams (draft - in review). Texas Parks and Wildlife Department, River Studies Report No. 16, Austin, Texas.

Mosier, D.T. and R.T. Ray. 1992. Instream flows for the lower Colorado river: reconciling traditional beneficial uses with the ecological requirements of the native aquatic community. Lower Colorado River Authority, Austin, Texas.

National Park Service. 1995. The nationwide rivers inventory. United States Department of the Interior, Washington, DC.

National Wetlands Inventory. 1999. NWI map for Matagorda quadrangle. [http://www.nwi.fws.gov]

Sipocz, A. 1999. Personal communication. Texas Parks and Wildlife Department, Houston, Texas.

Smith, S. 1999. Personal communication. Texas Natural Resource Conservation Commission, Houston, Texas.

Texas Natural Resource Conservation Commission. 2000. Texas surface water quality standards (draft). Texas Natural Resource Conservation Commission, Austin, Texas.

U.S. Fish and Wildlife Service. Undated. Endangered and threatened species of Texas and Oklahoma 1987 (with 1988 addendum). U.S. Fish and Wildlife Service, Albuquerque, New Mexico.

United States Fish and Wildlife Service. 1999. United States Fish and Wildlife Service Homepage. United States Fish and Wildlife Service.


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