Located in the city of Monterey, Salinas River State Beach - Potrero Entrance is one of the three and the central access point to the half-mile long and wide Salinas River State Beach in the town of Moss Landing. Salinas River State Beach - Potrero Entrance is situated in front of the Old Salinas River – and is backed by dunes and agriculture fields. Salinas River State Beach - Potrero Entrance is a popular destination for fishing, birdwatching, and beachcombing.