1. Annual precipitation, departure from normal, 1888 to 1939, and the monthly precipitation for the water year (October 1938 through September 1939) for each of the 20 irrigation States
2. Farms irrigated, areas, investment, and average annual cost of maintenance and operation of irrigation enterprises, censuses of 1890 to 1940, by States arranged in order of area irrigation works were capable of supplying with water in 1940
3. Areas, investment, and average investment per acre of irrigation enterprises, Censuses of 1902 to 1940, by specified drainage basins
4. Area irrigated, 1909 to 1939; area works were capable of supplying with water, area irrigable, capital invested, and average investment, 1920 to 1040; and average annual cost per acre of maintenance and operation of irrigation enterprises, 1919 to 1939; by source of water supply
5. Areas, capital invested, and average investment per acre, 1890 to 1940, and by type of irrigation enterprise, 1910 to 1940
6. Number and yield of pumped and flowing wells, average yield of pumped wells, 1910 to 1940; and average lift of pumped wells, 1940; by States
7. Number and total capacity of pumps, 1910 to 1940; average capacity of pumps and average capacity of prime movers, 1910 to 1940; and average lift of pumps, 1920 to 1940; by States
1. Precipitation and departures from normal: 1889, 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 of water year, October 1938 through September 1939
3. Irrigation enterprises, area existing irrigation works were capable of supplying with water, area irrigable in enterprises, and estimated completed cost of existing enterprises, 1910 to 1040; farms irrigated, and capital invested, 1890 to 1940; by States
4. Area irrigated, 1902, 1919, 1929, and 1939; area existing works were capable of supplying with water and area irrigable, 1920 to 1940; capital invested and average investment per acre works were capable of supplying with water 1902, 1920, 1930, and 1940; by specified drainage basins
5. Area irrigated, 1909 to 1939; area works were capable of supplying with water, area irrigable, capital invested, and average investment per acre works were capable of supplying with water, 1920 to 1940; and average annual cost per acre of maintenance and operation of irrigation enterprises, 1919 to 1939; by source of water supply, by States
6. Area irrigated, 1909 to 1939; area works were capable of supplying with water, 1910 to 1940; capital invested and average investment per acre works were capable of supplying with water, 1920 to 1940; by type of irrigation enterprise, by States
7. Length of canals, 1900 to 1940; capacity of canals at main headings, and number and yield of pumped wells, 1910 to 1940; and average pumping lift from pumped wells, 1940; by States
8. Areas, capital invested, average investment per acre, and proportions of totals, by type of enterprise: 1890 to 1940
9. Length of canals, 1902, 1920, 1930, and 1940; capacity of canals at main headings, and number and yield of pumped wells, 1920 to 1940; and average pumping lift from wells, 1940; by specified drainage basins
10. Number and yield of flowing wells; number and capacity of pumps, and average capacity of prime movers, 1910 to 1940; average lift of pumps, 1920 to 1940; by States
11. Number and yield of flowing wells; number, capacity, and average lift of pumps; and average capacity of prime movers; 1920 to 1940; by specified drainage basins
12. Pipe lines - total lengths, 1910 to 1940; and lengths by materials of construction and size, 1930 and 1940; by States
