Hilgardia
Hilgardia
Hilgardia
University of California
Hilgardia

Transparency tube provides reliable water-quality measurements

Authors

Randy Dahlgren
Erwin Van Nieuwenhuyse
Gary Litton

Authors Affiliations

R. Dahlgren is Professor, Soils and Biogeochemistry Program, UC Davis; E. Van Nieuwenhuyse is Fisheries Biologist, U.S. Bureau of Reclamation, Sacramento; G. Litton is Professor, Department of Civil Engineering, University of the Pacific (UOP), Stockton.

Publication Information

Hilgardia 58(3):149-153. DOI:10.3733/ca.v058n03p149. July 2004.

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Abstract

We examined the efficacy of using transparency-tube measurements to estimate turbidity, total suspended solids (TSS) and particulate nitrogen and phosphorus concentrations in several California waterways. Just as lowering a black-and-white disk (Secchi disk) into a lake provides a convenient way to measure its water clarity, a transparency tube offers a practical alternative for measuring water clarity and suspended solids concentrations in California streams and waterways. While transparency relationships with turbidity and TSS are strongest within a given sampling location, these relationships are relatively robust across a wide range of water bodies displaying contrasting conditions. However, transparency-tube measurements appear to have limited value in predicting particulate nutrient concentrations, even at a given sampling site. The low cost, ease of use and excellent repeatability of measurement make the transparency tube a potentially valuable tool for anyone interested in monitoring water quality, including farmers, ranchers, citizen volunteer groups, schools and local governments seeking to get involved in watershed monitoring programs.

References

Carlson RE. A trophic state index for lakes. Limnol Oceanogr. 1977. 22(2):361-9.

Cordone AJ, Kelly DW. The influences of inorganic sediment on the aquatic life of streams. Cal Fish Game. 1961. 47:189-228.

Davies-Colley RJ, Smith DG. Turbidity, suspended sediment, and water clarity: A review. J Am Water Resources Assoc. 2001. 37(5):1085-101. https://doi.org/10.1111/j.1752-1688.2001.tb03624.x

Kirk JTO. Light and Photosynthesis in Aquatic Ecosystems (2nd ed.). 1994. New York: Cambridge Univ Pr. 509 p.

Lloyd DS, Koenings JP, LaPerriere JD. Effects of turbidity in fresh waters of Alaska. N Am J Fisheries Manage. 1987. 7:18-33. https://doi.org/10.1577/1548-8659(1987)7:18/EOTIFW/2.0.CO;2

Preisendorfer RW. Visual optics of natural waters. Limnol Oceanogr. 1986. 31(5):909-26.

Rast W, Lee GF. Summary Analysis of the North American Project (US portion) OECD Eutrophication Project: Nutrient Loading-Lake Response Relationships and Tropic State Indices, USEPA Corvallis Environmental Research Laboratory, Corvallis, OR. 1978. EPA-600/3-78-008

[SWRCB] State Water Resources Control Board. The Section 303(d) List of Water Quality Limited Segments. 2003. www.swrcb.ca.gov/tmdl/303d_lists.html (accessed 6/7/04)

Dahlgren R, Nieuwenhuyse E, Litton G. 2004. Transparency tube provides reliable water-quality measurements. Hilgardia 58(3):149-153. DOI:10.3733/ca.v058n03p149
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