Sample site information. Ladybird lake is located 30.2500833, -97.713611, at Austin, Texas united states; it water shade drains waters to the Colorado River. The area has approximately 500,00o residents. The surrounding land uses include commercial, residential purposes, and recreation purposes. The area is highly impervious, and little water infiltration occurs. Bull Creek is located 30.395 -97.839 at the Austin, texas, united states. It consists of natural features, including flora and fauna, which meanders through Austin town to form a greenbelt. Walter e long lake is located 30.285167-97.596167 at Austin city. It has a highly waterproof cover due to more buildings and paved roads. The land uses include commercial and residential use. The data was collected between the august 2014