DRAINAGE OF JEFFERSON COUNTY, TEXAS. 29 
Drainage district No. 21: 
Excavation — 
976,700 cubic yards, at 8 cents per yard $78, 136 
325,000 cubic yards, at 10 cents per yard 32, 500 
Pumping plant, complete 30, 500 
Engineering and legal expenses, 10 per cent 14, 114 
Total 155, 250 
Acres benefited in district, 16,820. 
Average cost per acre, $9.25. 
Annual cost ol' operation: Total, $6,430; per acre, $0.38. 
Drainage district No. 22: 
Excavation— 
523,200 cubic yards, at 8 cents per yard 41, 856 
577,400 cubic yards, at 10 cents per yard 57, 740 
» Pumping plant, complete 24, 000 
Engineering and legal expenses, 10 per cent 12, 360 
Total - 135, 956 
Acres benefited in district, 10,480. 
Average cost per acre, $12.95. 
Annual cost of operation: Total, $6,525; per acre, $0.62. 
Drainage district No. 23: 
Excavation — 
997,750 cubic yards, at 8 cents per yard 79, 820 
455,300 cubic yards, at 10 cents per yard 45, 530 
Bridges, etc., 2 bridges 1, 600 
Pumping plant, complete 28, 500 
Engineering and legal expenses, 10 per cent 15, 545 
Total 170, 995 
Acres benefited in district, 14,440. 
Average cost per acre, $11.85. 
Annual cost of operation: Total, $5,830; per acre, $0.40. 
Drainage district No. 24: 
Excavation — 
1,536,850 cubic yards, at 8 cents per yard '. . 122, 948 
36,400 cubic yards, at 10 cents per yard 3, 640 
Pumping plant, complete 35, 000 
Engineering and legal expenses, 10 per cent 16, 159 
Total 177, 747 
Acres benefited in district, 19,590. 
Average cost per acre, $9.10. 
Annual cost of operation: Total, $7,250; per acre, $0.37. 
Drainage district No. 25: 
Excavation — 
59,400 cubic yards, at 8 cents per yard 4, 752 
1,484,250 cubic yards, at 10 cents per yard 148, 425 
33,600 cubic yards, at 12 cents per yard : . . . 4, 032 
Right of way for outlet, 36 acres, at $5 per acre 180 
Engineering and legal expenses, 10 per cent 15, 739 
Total. 173, 128 
Acres benefited in district, 10,970. 
Average cost per acre, $15.80. 
