Region
Texas
35
Houston
4
Austin Region
3
Edwards Aquifer (Tex.)
3
Comal County
2
Doña Ana County
2
Edwards Aquifer
2
El Paso County
2
El Paso Region
2
Gulf Coast
2
Honey Creek State Natural Area (Tex.)
2
Medina Lake Region
2
New Mexico
2
Austin
1
Dallas Metropolitan Area
1
Fort Worth Metropolitan Area
1
Galveston Bay
1
Hog Creek
1
Honey Creek State Natural Area
1
North Creek Watershed
1
San Antonio Region
1
Trinity River Watershed
1
Williamson County
1