This data consists of brown shrimp (also white shrimp until 1976) postlarval abundance and hydrologic parameters including water temperature and salinity. environmental information, such as air temperature, cloud cover, turbidity, wind speed and direction, and tide stage, may be included. Weekly observations were taken during the year until 1976. Observations were missing from winter 1977 to winter 1983, and 1988. Weekly observations (spring only) began again in February 1983 until the present.