What Calaveras Lake offers and when to fish it

Calaveras Lake sits about 30 miles south of San Antonio, formed by a dam on the San Antonio River in the Texas Hill Country transition zone. The lake holds largemouth bass, catfish, and sunfish in a setting that feels removed from the city despite the short drive. Water levels fluctuate significantly depending on rainfall and downstream demand, which affects where fish hold and how accessible different parts of the lake become.

Spring and fall are the most reliable seasons. Spring (March through May) brings active bass feeding as water temperatures climb into the 60s and 70s. Fall (September through November) produces similar conditions on the way back down. Summer can work if you fish early morning or late evening, but midday heat pushes fish deep. Winter is slowest, though catfish remain catchable on the bottom in deeper holes.

The lake is open to the public, managed by the San Antonio River Authority. Day-use access is free, though some areas require parking at designated spots. The main public launch is at the north end near the dam; a smaller access point exists on the south side. Neither has amenities beyond parking and a boat ramp, so bring water and supplies from town.

Key Takeaways

  • Calaveras Lake holds largemouth bass, catfish, and sunfish within 30 miles of San Antonio, with spring and fall offering the most consistent fishing.
  • Water level changes throughout the year affect where fish hold, so check current conditions before making the drive and adjust your target depths accordingly.
  • The main public launch is at the north end near the dam; day-use access is free but facilities are minimal.
  • Early morning and late evening are best in summer; spring and fall allow fishing throughout the day.
  • Largemouth bass respond to shallow cover in spring and move to deeper structure as water warms, while catfish stay on the bottom year-round.

Bass fishing structure and seasonal patterns

Largemouth bass at Calaveras respond to the same seasonal movements you see across Texas warm-water lakes, but the lake's relatively small size and fluctuating water level mean you can cover productive water quickly. In spring, focus on shallow flats with submerged brush, fallen timber, and the rocky banks near the dam. Bass move into these areas as water warms, and a 6-inch plastic worm or a topwater plug worked slowly along the edges produces strikes.

By early summer, bass retreat to deeper structure—channel ledges, drop-offs, and the deepest holes in the main lake basin. A Texas-rigged worm or a crankbait that reaches 12 to 18 feet becomes more effective than shallow presentations. The lake's depth varies, but the deepest water is typically 40 to 50 feet near the dam; most productive bass fishing happens in 8 to 20 feet of water during the heat.

Fall reverses the pattern. As water cools in September and October, bass move back to shallower structure and feed more aggressively. This is often the best month for numbers and size. Winter slows everything down, but bass still hold on deeper structure and will take a slowly worked jig or a live shiner if you fish the deepest holes with patience.

Catfish and sunfish opportunities

Channel catfish are present year-round and often overlooked by bass anglers. They hold on the bottom in deeper water, especially near the dam and in the main channel. Fish cut shad, chicken liver, or stink bait on a simple three-way rig with a sinker and a short leader. Dawn and dusk are most productive, but catfish bite throughout the night if you want to camp or fish after dark. A 2 to 5-pound catfish is common; larger fish are possible but less frequent.

Sunfish—bluegill, redear, and longear—school in shallow water around structure and vegetation. They bite readily on small jigs, inline spinners, or live crickets and minnows. Spring and early summer are peak season for sunfish, and they make for excellent light-tackle fun if you bring a spinning rod and small lures. Kids often have success here, and the fish are plentiful enough that you can catch a dozen in an afternoon.

Access points and boat launch details

The primary public access is the north launch near the dam, reached by taking Highway 37 south from San Antonio and following signs toward the lake. The ramp is concrete, maintained, and can handle most trailer boats. Parking is available but limited during weekends, so arrive early if you plan to launch on a Saturday or Sunday. There is no fuel dock, bait shop, or restaurant at the lake, so bring everything you need from San Antonio.

A secondary access point exists on the south side of the lake, though it is less developed and sometimes closed during low-water periods. Call the San Antonio River Authority before driving out if water levels have been low; they can confirm which ramps are open. Bank fishing is possible at both locations, though the north ramp offers the most accessible shoreline for wading or casting from the bank.

Water level and weather considerations

Calaveras Lake is a supply reservoir for San Antonio, so water level is managed for municipal demand rather than recreation. During dry years or drought conditions, the lake can drop 10 to 15 feet below full pool, which changes the entire character of the fishery. Shallow flats disappear, and fish concentrate in the remaining deeper water. High water, conversely, floods the banks and creates new shallow habitat that bass and sunfish exploit.

Check the San Antonio River Authority website or call ahead before a trip to confirm current water level and any access restrictions. A lake that was productive last month may be difficult to fish if water has dropped significantly. Wind is common in the Hill Country, especially in spring, so plan for choppy conditions and bring a boat that handles rough water or fish from the bank if the lake is too rough for your vessel.

Summer heat is intense, and the lake offers little shade. Bring extra water, sunscreen, and a hat. Afternoon thunderstorms are common in spring and summer and can develop quickly, so monitor the weather and be prepared to leave if storms approach.

Tackle and technique recommendations

For bass, a 6-foot to 6.5-foot medium-power spinning rod or baitcaster works well for most presentations. Bring Texas-rigged worms in 6 to 8-inch lengths in dark colors (black, purple, watermelon), a few crankbaits that dive to 12 to 15 feet, and a topwater plug for early morning. A 7-foot medium-heavy rod is useful for working deeper structure and for catfish if you want to fish both species in one trip.

For catfish, a conventional reel on a 6.5-foot medium-heavy rod is traditional and effective, though a spinning rod works fine. Bring a three-way rig setup, a supply of cut shad or chicken liver, and a headlamp if you plan to fish after dark. Sunfish respond to small jigs (1/16 to 1/8 ounce), inline spinners, and live bait on a light spinning rod—this is the place to bring that 5-weight fly rod or ultralight spinning setup if you have one.

Line choice depends on your target. For bass, 12 to 15-pound monofilament or 20-pound braided line works. For catfish, 15 to 20-pound monofilament is standard. For sunfish, 4 to 8-pound monofilament is plenty and makes the fight more fun.

Regulations and what to bring

Texas Parks and Wildlife manages the fishery. A valid Texas fishing license is required for anyone 17 and older. Licenses are available online, at sporting goods stores in San Antonio, or at the lake if a vendor is present. Bag limits are standard for Texas: largemouth bass (5 fish per day, 14-inch minimum), channel catfish (25 per day, no minimum), and sunfish (25 per day combined species, no minimum). Check the current Texas Parks and Wildlife regulations before you go, as rules can change.

Bring a cooler with ice if you plan to keep fish. The lake has no cleaning station, so plan to clean your catch at home or bring a fillet knife and cutting board. A life jacket is required for anyone in a boat, and it is wise to bring one even if you are fishing from the bank in case you need to wade into deeper water.

Frequently Asked Questions

What is the best time of year to fish Calaveras Lake?

Spring (March through May) and fall (September through November) are most productive. Water temperatures in the 60s and 70s trigger active feeding in bass and sunfish. Summer can work early and late in the day, but midday heat pushes fish deep. Winter is slowest overall, though catfish remain catchable.

Do I need a boat to fish Calaveras Lake?

No. Bank fishing is possible at the north launch and other access points, though a boat lets you reach deeper structure and cover more water. If you fish from the bank, focus on the area near the dam and along rocky shorelines where bass and catfish hold in shallow water.

How far is Calaveras Lake from downtown San Antonio?

About 30 miles south. The drive takes 45 minutes to an hour depending on traffic and which part of the city you start from. Take Highway 37 south and follow signs to the lake. There are no services at the lake itself, so bring food, water, and fuel from San Antonio.

What size fish can I expect to catch?

Largemouth bass typically range from 1 to 4 pounds, with occasional fish over 5 pounds. Catfish run 2 to 5 pounds on average. Sunfish are smaller, usually 6 to 10 inches, but plentiful. The lake is not known for trophy fish, but it offers consistent action and a good mix of species.

Can water level changes affect my fishing trip?

Yes. Calaveras is a supply reservoir, so water level fluctuates with municipal demand and rainfall. Low water concentrates fish in deeper areas and may close some access points. Call the San Antonio River Authority before your trip to confirm current conditions and which ramps are open.