Blanco River
Blanco / Hays Co. · 87 mi · Class I–II
5.03CFS/ 3.50 ft
Below Optimal→Stable
Optimal: 50–300 CFS · USGS #08171000
Length
Difficulty
Optimal
Avg Flow
Hist. Median
USGS Gauge
Blanco State Park · Texas Paddling Trail
A spring-fed Hill Country stream flowing through the ranch country between Blanco and San Marcos. The Blanco offers clear, gentle paddling over limestone bedrock with cypress-lined banks, swimming holes, and excellent smallmouth bass fishing. Blanco State Park provides easy access to the best upper stretch.
Trip sections
Blanco SP to Wimberley — 20 mi, best stretch, limestone shoals
Wimberley to Kyle — 25 mi, scenic canyon through ranch country
Kyle to San Marcos confluence — 15 mi, lower river, wider channel
72-Hour Flow Forecast
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10-Year Flow Patterns
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Data Quality
River conditions are community-verified. CFS ranges, difficulty ratings, and trip sections may not reflect every flow level or seasonal change. Always check current conditions, scout unfamiliar rapids, and paddle within your skill level. If you spot an error, use the Improve This River button at the top of the page — your local knowledge is what makes this atlas accurate.