Table 51. — Wood groivth and average hydrologic outpiits by ecosystem, 1970 



(Average) 

 [Totals may not add due to rounding] 



Ecogroup by ecosystem 



Western Range: 



Sagebrush 



Desert shrub 



Southwestern shrubsteppe - 

 Chaparral-mountain shrub 



Pinyon-juniper 



Mountain grasslands 



Mountain meadows 



Desert grasslands 



Annual grasslands 



Alpine 



Total 



Western Forest: 



Douglas-fir 



Ponderosa pine 



Western white pine _. 



Fir-spruce 



Hemlock-Sitka spruce 



Larch 



Lodgepole pine 



Redwood 



Hardwoods 



Total 



Great Plains : 



Shinnery 



Texas savanna 



Plains grasslands 



Prairie , 



Total 



Eastern Forest: 



White-red-jack pine — 



Spruce-fir 



Longleaf-slash pine 



Loblolly-shortleaf pine 



Oak-pine 



Oak-hickory 



Oak-gum-cypress 



Elm-ash-cottonwood 



Maple-beech-birch 



Aspen-birch 



Wet grasslands 



Total 



Grand total 



Total net 

 wood growth 



Million cu. 

 ft. per yr. 



607 



609 



2,312 

 987 

 31 

 564 

 652 

 178 

 240 

 178 

 339 



5,480 



Water 

 yield 



Ac. ft. 

 per yr. 



446 



667 



854 



3,323 



1,586 



4,054 



1,555 



590 



932 



362 



14,369 



20,459 



0.18 



.11 



.06 

 .62 

 .82 



.19 



2.70 



.24' 



1.23 



.41 



.80 



2.06 



4.14 



1.79 



.28 



3.84 



.52 



1.10^ 



.03 

 .15 

 .02 

 .32 



.08^ 



1.20 

 1.70 

 1.56 

 1.22 

 1.63 

 1.11 

 1.30 



.91 

 1.40 



.70 



.87 



1.24 = 



0.65 = 



Quality 

 water 



Ac. ft. 

 per yr. 



0.18 



.11 

 .06 



.57 

 .76 



.19 

 2.70 



.23 = 



1.22 



.32 



.80 



2.06 



4.14 



1.78 



.27 



3.84 



.37 



1.05^ 



.03 

 .10 



.13 



.03' 



1.20 

 1.70 

 1.51 

 1.05 

 1.23 



.98 

 1.21 



.78 

 1.28 



.70 



.87 



1.11 



0.59 = 



storm 

 runoff 1 



Inches 



0.09 

 .17 



1.07 

 .84 

 .22 

 .23 

 .11 

 .37 

 .14 

 .39 



.32^ 



.90 

 .01 



.11 



1.68 

 .08 

 .14 



1.72 



.72 



.44 = 



.62 



2.60 



.49 



.99 



.72 = 



.10 



.60 



3.41 



1.26 



1.32 



.78 



4.80 



.70 



.85 



.22 



5.47 



1.37^ 



6.76 = 



Sediment 



Tons 

 per yr. 



5.41 



.40 



.45 



7.86 



5.12 



1.37 



.14 



.13 



.54 



2.74 = 



.36 

 .20 



.20 



.02 



.07 



.37 



2.49 



.52 = 



.45 



.23 



1.15 



1.40 



1.12 = 



.33 



.77 

 .78 



.97 

 .10 



0.43 = 



1.38 = 



^ The amount of runoff expected for a 2-year 2-day storm for a given site. 

 = Weighted average. 



135 



