have been about 0.5 mg/£. The 20 lb. per capita chloride figure for humans is 

 used although it may be a little large. 



The outflow total of 18,900 tons or concentration of 1.2 mg/£. is the 

 consequence of the assumptions used in the balance. An examination of 

 published data up to 1920 suggests this is quite reasonable as shown by the area 

 weighted mean of 1.3 mg/£ in Table 2. 



Table 1. 

 Chloride Balance for New Hampshire, 1920 



Inflow Chloride, Tons 



Atmospheric Precipitation and Dry Fallout!/ 14,500 



Human Activity?./ 4,400 



Total 18,900 



Outflow 



Surface water and Ground waterA^ 18,900 



Change in Storagel^ 



1. 0.5 mg/^chloride in 43 inches of precipitation on 9,300 square miles. 



2. 20 lbs. per capita per year for 443,000 people. 



3. Equivalent to 1.2 mg/£^ chloride in 23 inches of runoff from 9,300 square miles. 



4. Assumed zero, but human activities may actually be sufficient to cause a small increase 

 in storage. 



