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USGS Manuals

The USGS publishes a series of manuals titled "Techniques of Water-Resource Investigations" for planning and conducting water resource investigations. The following manuals may be ordered:

Surface Water Techniques

TWRI 3-A1. General field and office procedures for indirect discharge measurements. 30 pages.

TWRI 3-A2. Measurement of peak discharge by the slope-area method. 12 pages.

TWRI 3-A3. Measurement of peak discharge at culverts by indirect methods. 60 pages.

TWRI 3-A4. Measurement of peak discharge at width contractions by indirect methods. 44 pages.

TWRI 3-A5. Measurement of peak discharge at dams by indirect methods. 29 pages

TWRI 3-A6. General procedure for gaging streams. 13 pages.

TWRI 3-A7. Stage measurement at gaging stations. 28 pages.

TWRI 3-A8. Discharge measurements at gaging stations. 65 pages.

TWRI 3-A9. Measurement of time of travel in streams by dye tracing. 27 pages.

TWRI 3-A10. Discharge ratings at gaging stations. 59 pages.

TWRI 3-A11. Measurement of discharge by the moving-boat method. 22 pages.

TWRI 3-A12. Fluorometric procedures for dye tracing. 34 pages.

TWRI 3-A13. Computation of continuous records of streamflow. 53 pages.

TWRI 3-A14. Use of flumes in measuring discharge. 46 pages.

TWRI 3-A15. Computation of water-surface profiles in open channels. 48 pages.

TWRI 3-A16. Measurement of discharge using tracers. 52 pages.

TWRI 3-A17. Acoustic velocity meter systems. 38 pages.

TWRI 3-A18. Determination of stream re-aeration coefficients by use of tracers. 52 pages.

TWRI 3-A19. Levels at streamflow gaging stations. 31 pages.

TWRI 3-A20. Stimulation of soluble waste transport and buildup in surface waters using tracers. 38 pages.

TWRI 3-A21. Stream-gaging cableways. 56 pages.

TWRI 4-A1. Some statistical tools in hydrology. 39 pages.

TWRI 4-A2. Frequency curves. 15 pages.

TWRI 4-B1. Low-flow investigations. 18 pages.

TWRI 4-B2. Storage analyses for water supply. 20 pages.

TWRI 4-B3. Regional analyses of streamflow characteristics. 15 pages.

TWRI 4-D1. Computation of rate and volume of stream depletion by wells. 17 pages.

TWRI 8-A1. Methods of measuring water levels in deep wells. 23 pages.

TWRI 8-A2. Installation and service manual for U.S. Geological Survey manometers. 57 pages.

TWRI 8-B2. Calibration and maintenance of vertical-axis type current meters. 15 pages.

Sediment Analysis

TWRI 5-C1. Laboratory theory and methods for sediment analysis. 58 pages.

TWRI 3-C1. Fluvial sediment concepts. 55 pages.

TWRI 3-C2. Field methods for measurement of fluvial sediment. 80 pages.

TWRI 3-C3. Computation of fluvial-sediment discharge. 66 pages.

Water Quality

TWRI 1-D1. Water temperature - influential factors, field measurement, and data presentation. 65 pages.

TWRI 1-D2. Guidelines for collection and field analysis of ground water samples for selected unstable constituents. 24 pages.

TWRI 9-A1. Preparations for water sampling. 37 pages.

TWRI 9-A2. Selection of equipment for water sampling. 47 pages.

TWRI 9-A6. Field measurement. 110 pages.

TWRI 9-A7. Biological indicators. 42 pages.

TWRI 9-A8. Bottom-material samples. 53 pages.

TWRI 9-A9. Safety in field activities. 21 pages.

Water Analysis

TWRI 5-A1. Methods for determination of inorganic substances in water and fluvial sediments. 545 pages.

TWRI 5-A2. Determination of minor elements in water by emission spectroscopy. 31 pages.

TWRI 5-A3. Methods for determination of organic substances in water and fluvial sediments. 80 pages.

TWRI 5-A4. Methods for collection and analysis of aquatic biological and microbiological samples. 363 pages.

TWRI 5-A5. Methods for determination of radioactive substances in water and fluvial sediments. 95 pages.

TWRI 5-A6. Quality assurance practices for the chemical and biological analysis of water and fluvial sediments. 181 pages.