Water Quality Data from Ponds on Bouldin Island in the Sacramento-San Joaquin Delta, California

This data release includes water quality data collected from ponds on Boudin Island in the Sacramento-San Joaquin Delta. Data were collected in the Bouldin East and Bouldin West ponds concurrently with a Delta Smelt Enclosure Study which involved three cages in each pond with approximately 60 Delta Smelt (Hypomesus transpacificus) in each cage. There were two fish deployments, the first deployment was from 11/21/2022 to 01/04/2023 (~6 weeks) and the second was from 02/02/2023 to 05/03/2023 (~13 weeks). Temperature, dissolved oxygen, turbidity, specific conductance, salinity, chlorophyll, and pH were measured weekly. Water temperature was recorded continuously (15-minute sampling interval). Both the discrete (weekly) and the continuous water quality measurements were collected at a fixed site approximately 50 m from the cages. Discrete water quality parameters were also measured at the cages before fish were put in the cages and at week 3 for the first deployment and weeks 3 and 12 during the second deployment.