Fishing Grothaus Lake in Bexar County, Texas

• Overview

  Grothaus Lake stands in Bexar County, Texas. This is open low country country. About 10 acres of surface, which puts the far bank inside easy sight. It is one of the smaller waters we list in Bexar County. Nearest town is Somerset, 4.3 miles off. The nearest city of size is San Antonio, 17 miles away. It sits near the edge of the county, so check which rules apply.

• Where to Fish on Grothaus Lake

  The records we hold are silent on depth, so plan to find it yourself. Draw-down through summer strips the margins, so follow the water out. Built water gives depth close in, which suits a bank angler. Open occurrence data for the surrounding area lists bluegill, Rio Grande longear sunfish, largemouth bass and gizzard shad. Use it to know what is possible here, not what is certain. Grothaus Lake gives up more to patience than to distance.

• Seasonal Patterns

  July runs about 84°F on average, January about 51°F. Fish feed through every month here. March through May is the strongest run, with autumn a second stretch. Late winter often fishes better here than midsummer does. On Grothaus Lake the same rules apply, with local timing. As the season turns, fish follow food rather than temperature alone.

• Tackle & Baits

  Our records carry no access rule either way. Mapping shows an empty shoreline: no ramp, no jetty, no marked entry. Largemouth respond to soft plastics tight to cover; go weedless where the growth is heavy. Parking space is the usual limit rather than the bank itself. Some water is controlled locally without a sign saying so. Failing this one, try Lost Pond, 2 miles away. What applies at Grothaus Lake may have changed since it was mapped.