- Type
- Harbour
Quiet marina on Sevenmile Slough at Isleton, off the San Joaquin River. 165 wet berths and around 1,700 ft of side-tie dockage on a 20-acre site.
Guide
Approach and anchoring
From the San Joaquin River, turn into Sevenmile Slough at channel marker 41. The slough is well marked and free of strong current. The basin sits about 1 nm inside the slough.
Practical
Shore power and fresh water on the pontoons. Heads, showers, laundry, fitness room, lounge. Dry storage units. No fuel berth on site, refuel at B & W Resort or Ox Bow on the Mokelumne side.
Ashore
Walking paths around the 20-acre property, organic vegetable garden and loaner bicycles for berth holders. Brannan Island State Recreation Area at 5 km by road for trails and beach. Isleton old town at 6 km for groceries and restaurants.
Key facts
- Type
- Harbour
- Coordinates
- 38.11663, -121.62945 (38°7.00'N 121°37.77'W)
- Town
- Rio Vista
- Country
- United States
- Phone
- +19167776055
- Updated
- July 7, 2026
Getting there
Owl Harbor lies at 38°7.00'N 121°37.77'W, that is 38.11663, -121.62945 in decimal degrees.
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