. Local businessmen and civic leaders formed the Redwood City Harbor Company in the year 1912, establishing the name of the Port for the era of the early 20th century. In this period competition from the railroad limited growth of the port. A number of industrial companies, however, saw the value of the Port's location, including the Alaska Codfish Company and the Morgan Oyster Company. In particular the Pacific-Portland Cement Company, moving to the Port in 1924, substantially increased shipping activity. Industrial tenants of the port include Cemex, a cement plant, and Sims Metal Management, a metal recycler. The port area has also grown with non-industrial businesses: Spinnaker Sailing, Agiloft, Workboard and others within the Portside Business Park. In 1966 a napalm manufacturing plant was opened by United Aircraft despite attempts by students and locals to block the opening. Geology and hydrology The Port of Redwood City is situated on the east banks of Redwood Creek approximately one kilometer upchannel from the mouth of Redwood Creek. Extensive areas of marshland and bay muds are found in the vicinity of the Port. Westpoint Slough joins Redwood Creek from the southeast about 600 meters north of the Port of Redwood City. Deepwater Slough is a U-shaped channel whose two ends join Redwood Creek both north and south of the Port, with both joins on the opposite site of Redwood Creek. Approximately one kilometer north of the Port of Redwood City, Corkscrew Slough enters Redwood Creek from the northwest. From that confluence northward the northwest bank of Redwood Creek (now at the mouth) consists of Bair Island, an expansive area of saltwater marsh and salt evaporation ponds. Typical high tides at the Port range from 7.0 to , based upon February, 2007 tide chart data. Low tide typically varies from −0.8 to . Water temperatures measured along the slough of Redwood Creek at NOAA Station RTYC1 typically run to the low 70s F by mid and late summer, which can be as much as 10 degrees warmer than water temperatures in the northern and central sections of San Francisco Bay. Microclimate Climates within the San Francisco Bay Area have superficial similarities, but certain features have pronounced differences. For this reason a detailed microclimate study was conducted at the Port of Redwood City, with the specific goal of comparing meteorological parameters to nearby locations. Temperatures, for example, were found to conform closely to those