heavy on the northern Coastal Plain and the pied- 

 mont because of the large number of farms in these 

 regions; on the piedmont, it exceeded the aggregate 

 drain of all other products. 



Of the pine drain in the State, 51 percent was 

 chargeable to lumber, 28 percent to fuel wood; of the 

 hardwood drain, 33 percent was for lumber manu- 

 facturing, 43 percent for fuel wood, and 14 percent 

 for veneer logs and bolts. 



As noted before, the influence of the new pulp 

 mills, as well as the growing market for kraft paper, 

 is reflected in the rapid increase in the pulpwood cut. 

 For example, pulpwood accounted for only 1 percent 

 of the total cubic-foot drain in the State in 1936, but 

 approximately 14 percent in 1940, and an even 

 larger percent on the Coastal Plain. 



Table 27. — Average annual commodity drain^ all materials , in the 

 5-year period 1936—40 



Survey unit and commodity 



Pines 



Hard- 

 woods 



All 

 species 



St.,te: 



Lumber 



Million 

 cuhicfeet 

 106.95 

 1.81 

 26.94 

 59.31 

 16.25 



Million 

 cuhicSeet 

 31.56 

 13.71 

 1.92 

 41.28 

 7.22 



Million 



Veneer 



15.52 



Pulpwood 



















211.26 



29.43 

 .37 

 6.84 

 6.38 

 5.45 



95.69 



306.95 





Southern Coastal Plain: 

 Lumber 



8.65 

 2.88 

 .02 

 6.10 

 1.72 



38 08 



\-eneer 





Pulpwood 





Fuel wood 



12 48 











Total 



48.47 



19.37 



67 84 







Northern Coastal Plain: 

 Lumber 



46.55 

 1.39 

 17.64 

 26.10 

 7.49 



21.10 

 10.17 

 .72 

 16.93 

 3.90 



67 65 



Veneer 



11.56 





Fuel wood 



43.03 

 11.39 







TotaL 



99.17 



52.82 



151.99 





Piedmont: 

 Lumber 



30.97 

 .05 



2.46 

 26.83 



3.31 



1.81 

 .66 



18. "25 

 1.60 



32.78 

 .71 



3.64 

 45.08 



4.91 



Veneer 



Pulpwood 



Fuel wood 



Other products 





Total 



63.62 



23.50 



87.12 





1 From all sound trees 5 inches d. b. h. and larger, inside bark. 



Impounded water of the Santee-Cooper power and 

 navigation project has eliminated about 120,000 

 acres of forest in portions of Berkeley, Calhoun, 



Clarendon, Orangeburg, and Sumter Counties. 

 However, approximately 90 percent of the old- 

 growth bottom-land hardwoods, estimated at 90 

 million board feet, and second-growth pine, esti- 

 mated at 150 million feet, were salvaged before the 

 reservoirs were flooded. Possibly as much as 75 

 million feet, principally second-growth bottom-land 

 hardwoods, were not utilized because of inaccessi- 

 bility, the low volunie of the stands, and lack of mar- 

 kets. About 680,000 cords of under-sawlog-size 

 material and saw-timber were not salvaged, an 

 amount equal to a half-year's supply of fuel wood for 

 the State. Because the water was impounded after 

 1940, the last year for which complete commodity 

 drain data are available, these losses have not been 

 included in the tabulations in this report. Lumber 

 and pulpwood produced from the area in 1940, how- 

 ever, have been included as items of drain. 



Commodity Drain in Relation to 

 Growing Stock 



South Carolina's wood-using industries can be 

 supplied indefinitely from the State's forests at the 

 current level of output only if the net growth con- 

 tinues to equal the commodity drain. Since de- 

 mands for wood products do not remain constant, 

 but are likely to expand from time to time (as during 

 the war), an accumulation of growth surpluses over 

 drain is desirable. Obviously, if mortality and com- 

 modity drain combined exceed the gross growth, 

 year after year, the growing stock will eventually be 

 exhausted. 



The influence of growth, mortality, and com.mod- 

 ity drain upon the growing stock of the State for the 

 5-year period (1936-40) is illustrated in table 28. 

 The aggregate increase of about 710 million board 

 feet of pine — 142 million per year — is the quantity 

 available for building up the growing stock and for 

 industrial expansion. Because there is a deficit in 

 hardwoods for the State as a whole, any expansion 

 based upon growth increment will have to be limited 

 to pine. 



The results are somewhat different if calculations 

 are based upon the cubic volume of sound trees 5 

 inches d. b. h. and larger, also shown in table 28. 

 Expressed in this measure, the annual increment of 

 pine growing stock for the State as a whole is some- 

 what less than in the board-foot measure, because 

 the drain on under-sawlog-size trees for pulpwood 

 and other small-tree uses is included. For the hard- 

 woods, too, the situation is much better; instead of 

 a deficit there is an increase in growing stock of 134 



51 



