San Martin Lake   Be the first to submit input for San Martin Lake. If you have info on San Martin Lake, Cameron County, Texas please submit it here to improve this web site.          These outdoors activities are available near San Martin Lake.   Marinas On or Near San Martin Lake: Tarpon Rv Park & Marina, Port Isabel, 9 miles away Anchor Marina Park, Port Isabel, 10 miles away Pelican Point Marina, Port Isabel, 10 miles away   Camp Grounds Near San Martin Lake: Rio RV Park, Brownsville, 7 miles away Sea Garden Park, Port Isabel, 7 miles away Breeze Lake Campground, Brownsville, 7 miles away Four Seasons RV Resort, Brownsville, 7 miles away   Hotels Near San Martin Lake: Super 8 Brownsville/South Padre Island, Brownsville, 8 miles away Port Isla Inn, Port Isabel, 9 miles away Days Inn Brownsville, Brownsville, 12 miles away Americas Best Value Inn, Brownsville, 12 miles away Staybridge Suites BROWNSVILLE, Brownsville, 12 miles away   Golf Courses Near San Martin Lake: Schaefer Steve Doring & Golf, Brownsville, 6 miles away