1. Annual precipitation, departure from normal, 1888 to 1939, and the monthly precipitation for the water year (September 1938 through October 1939): Arkansas, Louisiana, and Florida
2. Annual precipitation, departure from normal, 1888 to 1939, and the monthly precipitation for the water year (September 1938 through October 1939): Montana, North Dakota, and South Dakota
3. Annual precipitation, departure from normal, 1888 to 1939, and the monthly precipitation for the water year (September 1938 through October 1939): Wyoming, Colorado, and Nebraska
4. Annual precipitation, departure from normal, 1888 to 1939, and the monthly precipitation for the water year (September 1938 through October 1939): Kansas, Oklahoma, and Texas
5. Annual precipitation, departure from normal, 1888 to 1939, and the monthly precipitation for the water year (September 1938 through October 1939): Utah, Arizona, and New Mexico
6. Annual precipitation, departure from normal, 1888 to 1939, and the monthly precipitation for the water year (September 1938 through October 1939): Washington
7. Annual precipitation, departure from normal, 1888 to 1939, and the monthly precipitation for the water year (September 1938 through October 1939): Oregon
8. Annual precipitation, departure from normal, 1888 to 1939, and the monthly precipitation for the water year (September 1938 through October 1939): Ohio, Nevada, and California
9. Areas, capital invested, and average investment per acre, 1890 - 1940; and by type of irrigation enterprise, 1910 - 1940
10. Proportion of total. - Area irrigated and area works were capable of supplying water, 1910 - 1940; and capital invested, 1920 - 1940; by type of irrigation enterprise
1. Precipitation and departures from normal: 1890, 1899, 1902, 1909, 1919, 1929, 1934, and 1939
2. Monthly and annual precipitation with annual departure for calendar years, 1938 and 1939; and monthly and total precipitation with departure for period for water year, October 1938 through September 1939
3. Area irrigated, 1939, 1929, and 1919; area irrigation works were capable of supplying water, 1940 and 1930; capital invested, 1940, 1930, and 1920; and average investment per acre, 1940 and 1930; by States and by principal drainage basins
4. Areas, capital invested, average investment per acre, and proportions of totals, by type of enterprise: 1890 to 1940
5. Irrigation of agricultural lands in the humid States exclusive of Arkansas and Louisiana - Number of farms reporting irrigation and area irrigated, 1939, 1934, 1902, and 1899; and construction costs of systems, 1902 and 1899; by States
6. Cost of maintenance and operation, 1939 and 1929; and pay roll and number of employees, 1939; by States
7. Indebtedness, 1939; arrearage, 1939 and 1936; and annual charges, 1939 and 1929; by States
8. Area receiving entire water supply from streams, by type of diversion, by States: 1939, 1929, and 1919
9. Area receiving entire water supply from wells, by type of diversion, by States: 1939, 1929, and 1919
10. Area receiving entire water supply from mixed sources, by type of diversion, by States: 1939, 1929, and 1919
11. Area receiving entire water supply from miscellaneous sources, 1939, 1929, and 1919; and area receiving supplemental water from streams, storage, and wells, 1939 and 1929; by States
12. Number of diversion and storage dams, 1930, 1930, and 1920, by materials, 1940; and number of reservoirs with capacity, 1940, 1930, and 1920; by States and by principal drainage basins
13. Length of canals with capacity at main heading, length of pipe lines, and number of flowing wells, with capacity, 1940, 1930, and 1920; and pipe lines by kind of material, 1940; by States and by principal drainage basins
14. Number and yield of pumped wells, by States and by principal drainage basins: 1940, 1930, and 1920
15. Pumping equipment - By kind of power, by kind of pump, by States, and by principal drainage basins: 1940, 1930, and 1920
16. Area irrigation works were capable of supplying with water, and irrigable area, 1940, 1930, and 1920; and the excess of these areas over areas irrigated, 1939, 1929, and 1919; by States and by principal drainage basins
17. Drainage within irrigation enterprises which reported lands drained or needing drainage - Area irrigated, area irrigable, area for which drains have been installed. and additional area needing drainage in these enterprises, by States, 1940, 1930, and 1920; and by principal drainage basins, 1940
18. Water used per acre irrigated from surface sources, 1939 and 1929; and from underground sources, 1939; by primary and supplemental enterprises and by States
19. Proportion of total of areas irrigated, by type of water rights, by States: 1939, 1929, and 1919
20. Area irrigated with pumped water, 1939, 1929, and 1919; and area works of enterprises operating pumps were capable of supplying with water, 1940 and 1930; by source of pumped water, by States
21. Enterprises using pumped water - Investement, 1940, 1930, and 1920; and cost of maintenance and operation, 1939, 1929, and 1919; by source of supply and by States
22. Mortgage status of irrigated farms operated by full owners and part owners - Number, acreage, value, and amount of debt for farms with cropland harvested wholly irrigated, 1940
23. Mortgaged irrigated farms operated by full owners and part owners reporting amount of debt - Number, acreage, value, and amount of debt for farms with cropland harvested wholly irrigated, 1940
24. Real-estate and personal-property taxes levied in 1939 on farms with cropland harvested wholly irrigated, for farms of full owners and of part owners: Census of 1940
25. Mortgage status of irrigated farms operated by full owners and by part owners - Number, acreage, and value of farms with cropland harvested wholly irrigated, by States, 1940
26. Mortgaged irrigated farms operated by full owners reporting amount of debt - Number, acreage, and value of farms with cropland harvested wholly irrigated, by States, 1940
27. Mortgaged irrigated farms operated by part owners reporting amount of debt - Number, acreage, and value of farms with cropland harvested wholly irrigated, by States, 1940
28. Farm taxes for irrigated farms operated by owners - Taxes on farm property of owner operators for farms with cropland harvested wholly irrigated, by States, 1939
2. Census of Agriculture - number of farms, farm acreage according to use, and specified farm values for irrigated and nonirrigated farms, by tenure of operator, 1940
3. Number of enterprises, irrigable area, area works were capable of supplying with water, 1940; irrigated area, 1939, 1929, and 1919; water delivered to irrigators, 1939; by source of water supply
4. Investment, 1940 and 1930; and cost of maintenance and operation, 1939, 1929, and 1919; by source of water supply
5. Areas, by type of enterprise: 1940, 1930, and 1920
6. Enterprises, areas, average costs, 1940; and area irrigated, 1939; by type of enterprise
7. Investment in irrigation enterprises, by type of enterprise: 1940, 1930, and 1920
8. Indebtedness, arrearage, and charges, by type of enterprise, Census of 1940
9. Cost of maintenance and operation, and pay roll and number of employees, 1939; by type of enterprise
10. Irrigation works, by type of enterprise, 1940
11. Dams, by material: 1940 and 1930
12. Pumping plants, by kind of motive power and type of pump, 1940; and total number and capacity, 1930
13. Pipe lines, by material, size, and length: 1940 and 1930
14. Area within irrigation enterprises for which drains have been installed, and additional area in need of drainage: 1940, 1930, and 1920
15. Water used, by source of supply: 1939, 1929, and 1919
16. Area irrigated, by type of rights under which water was delivered: 1939, 1929, and 1919
17. Enterprises, area irrigated, capital invested, maintenance and operation, charges, indebtedness, and arrearage, type of enterprise, pay roll, number of employees, and source of water supply; by specified groups of irrigated units, areas irrigated, and cost of works: Census of 1940
18. Drainage basin - area irrigated, 1939, 1929, 1919; capital invested and irrigable area, 1940, 1930, 1920; and irrigated units, maintenance and operation, charges, indebtedness, water delivered to irrigators, and drainage or irrigated land, 1939
19. Drainage basin - enterprises and irrigation works, 1940, 1930, and 1920
20. Irrigated farms and tenure of farm operators, 1940 and 1930; irrigated area, 1939, 1929, and 1919; irrigable area and capital invested, 1940, 1930, and 1920; maintenance and operation, charges, and indebtedness, 1939 and 1929; and in irrigated farms, 1940; water delivered to irrigators and drainage of irrigated land, 1939
21. Farm values, 1940; enterprises and irrigation works, 1940, 1930, and 1920; and pay roll and number of employees, 1939
22. Specified crops grown on irrigated and nonirrigated lands - Farms reporting and average yields, 1939; and acreages, 1939 and 1929; by States
