|WORLD METEOROLOGICAL ORGANIZATION||
|Explanation of the criteria for classification and numbering of components||
|Explanation of the dates on the component's description|
MEASUREMENT OF TIME OF TRAVEL AND DISPERSION IN STREAMS BY DYE TRACING
1. Purpose and objectives
Measurements of the dispersion and concentration of dyes give insight
into the behaviour of soluble contaminants that may be introduced into a
The manual (Hubbard and others, 1982) describes methods of measuring
time of travel of water and waterborne solutes by dye tracing. The
fluorescent dyes, measuring equipment used, and the field and laboratory
procedures are also described. Methods of analysis and presentation to
illustrate time-of-travel and dispersion characteristics of streams are
Dye is introduced at a site and measurements of dye concentrations are
made at several locations downstream from the injection point.
Travel time-distance relations, time-concentration curves and various
graphs showing dispersion that allow the analyst to estimate the travel
time of various pollutants.
5. Operational requirements and restrictions
Dyes should not be injected into streams in quantities that would result in dye concentrations exceeding 10 micrograms/litre at water-user
withdrawal points. All water users in the reach should be notified.
6. Form of presentation
Manual, written in English, is available (Hubbard and others, 1982).
7. Operational experience
Extensive use within the United States.
8. Originator and technical support
U.S. Geological Survey, Office of Surface Water, Reston, Virginia, USA.
10. Conditions on use
The manual is available free of charge.
Hubbard, E. F., Kilpatrick, F. A., Martens, L. A., and Wilson, J. F., Jr., 1982, Measurement of time of travel and dispersion in stream by dye tracing: U.S. Geological Survey Techniques of Water Resources Investigations, Book 3, Chapter A9, 44 p.
|(First entered: 25 AUG 87||
Last updated: 29 NOV 94)