Allt-.02 HydrograpMc Data 



1. Test Board No. 1 (USM-l ). The depth of water where this 

 test hoard was Installed was 22 ft 6 in. helow roeeaa law water; the tidal 

 range was 2.8 ft; the current was not reported. The temperature of the 

 water at the time of installation was 80° F at l8 ft below mean low water. 

 The following determinatian of salinity was made from aaniples taken on 

 March 8, 19li-6: 



Chlorides (as Cl) 7,597 ppm or W^ grains per U. S. gal 

 Chlorides (as NaCl) 12,500 ppm or 732 grains per U. S. gal 



The water was reported to he heavily polluted. The following record of 

 the tenrperatvire of the water, hased on readings made ahout the middle of 

 each month or shortly thereafter, and presumahly all made at l8 ft helow 

 mean low water, shows the general range at this location. 



2. Test Board No. 2 (USanJ-2 ). The depth of water where this test 

 board was installed was 21 ft at mean low water; the tidal range was 2.7 

 ft; the current, tidal ebb and flow, 0.8 to 0.9 knot. The temperature of 

 the water at the time of installations was 77° F. The salinity was not 

 determined. A high concentration of pollution was reported. The following, 

 record of the temperature of the water in degrees F, based on readings 

 made about the first week in each month from samples taken at 20 ft below 

 mean water, shows the general range at this location. 



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