Medina River

About

Medina Dam — Largest in Texas, 1912. Paddlers know the Medina as a Class I–II river with an optimal flow window of 50 to 500 cubic feet per second, monitored at USGS gauge 08178880, which carries an average of about 140 CFS. The river splits into three distinct characters. The 30-mile reach above Medina Lake is a spring-fed canyon and the best paddling water on the system. Below it, the 20-mile Bandera-to-Medina Lake town section draws tubers, and beyond the lake a wider 70-mile valley runs down to the San Antonio River confluence.

The human story here is older than most Texas rivers can claim. Before contact, the Medina valley was a contested borderland between Lipan Apache and Comanche territories. The Payaya, encountered by the Espinosa-Olivares-Aguirre expedition in 1709, relied on the river's pecan groves as a seasonal and stored food source. In 1813, the Battle of Medina was fought near the river — one of the bloodiest battles in Texas history, pitting Spanish royalists against republican insurgents.

Settlement followed the water. In 1852, Polish and German settlers established Bandera on the Medina River. The town became a staging point for cattle drives on the Western Trail to Kansas, earning its enduring nickname as the Cowboy Capital of the World. Bandera remains the paddling gateway to the upper river, with a city park river access and outfitters such as the Medina River Company renting tubes and kayaks.

The river's defining twentieth-century mark came with the Medina Dam, completed in 1912–1913. When built, it was the largest dam in Texas — 1,580 feet long and 164 feet high — and used the English 'gravity' design, the largest structure of its type ever built at the time. Its reservoir, Medina Lake, came at a cost to the past: the rising water drowned the old town of Mico, Texas. The lake now supplies irrigation water to the Bexar-Medina-Atascosa Water District, and the dam was designated a Texas State Historical Landmark in 1976.

Hydrological study of the Medina reaches back to the late nineteenth century, beginning with USGS survey work in the 1870s–1890s and the establishment of gauging stations in the 1880s–1910s, followed by state geological survey streamflow assessments in the 1910s–1930s. Later state water-pollution-control studies in the 1950s–1970s and Clean Water Act assessments from 1972 to 2000 shifted attention toward water quality. In the modern era, regional watershed partnerships have pursued streambank stabilization, native fish restocking, nutrient reduction, and water-quality improvements — the current chapter in a river that has been surveyed, dammed, settled, and fished for well over three centuries of recorded history.