Scientific Investigations Report 2009–5025
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2009–5025
Water Quality of a Drained Wetland, Caledonia Marsh on Upper Klamath Lake, Oregon, after Flooding in 2006
By Mary K. Lindenberg and Tamara M. Wood
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Figures
Figure 1. Location of flooded Caledonia Marsh and water quality sampling sites, Upper Klamath Lake, Oregon, 2006.
Figure 2. Flooding in Caledonia Marsh, Upper Klamath Lake, Oregon, June 9, 2006.
Figure 3. Sediment plume draining from the breached levee opening of flooded Caledonia Marsh to Upper Klamath Lake, June 9, 2006.
Figure 4. Wetlands surrounding Upper Klamath and Agency Lakes, Oregon, 2006.
Figure 5. Two of the three internal levees (marked by black lines) separating water quality sampling site FCM2 from the external levee breach that opened flooded Caledonia Marsh to Upper Klamath Lake, Oregon, June 9, 2006.
Figure 6. Concentrations of chlorophyll a, total particulate nitrogen, total nitrogen, total particulate carbon, and total phosphorus at sites FCM1, FCM2, and FCM3 in flooded Caledonia Marsh, Upper Klamath Lake, Oregon, 2006.
Figure 7. Concentrations of chlorophyll a, orthophosphate, ammonia, nitrite-plus-nitrate, and dissolved organic carbon at sites FCM1, FCM2, and FCM3 in flooded Caledonia Marsh, Upper Klamath Lake, Oregon, 2006.
Figure 8. Dissolved oxygen concentration, pH, and specific conductance values at sites FCM1, FCM2, and FCM3 in flooded Caledonia Marsh, Upper Klamath Lake, Oregon, 2006.
Figure 9. Relation of specific conductance concentrations to dissolved organic carbon concentrations at sites FCM1, FCM2, and FCM3 in flooded Caledonia Marsh, Upper Klamath Lake, Oregon, 2006.
Figure 10. Statistical distribution of chlorophyll a, total phosphorus, and total nitrogen concentrations measured at flooded Caledonia Marsh sites (FCM1, FCM2, and FCM3), the Howard Bay site (HDB), and the median lakewide sites, Upper Klamath Lake, Oregon, 2006.
Figure 11. Statistical distribution of chlorophyll a and total phosphorus concentrations measured at Howard Bay (HDB) and of the median concentrations of lakewide sites, Upper Klamath Lake, Oregon, 2005 and 2006.
Figure 12. Chlorophyll a concentrations in Howard Bay, Upper Klamath Lake, Oregon, 2006.
Figure 13. Relation of chlorophyll a concentrations to the ratio of total nitrogen and total phosphorus concentrations in flooded Caledonia Marsh, Upper Klamath Lake, Oregon, 2006.
Tables
Table 1. Minimum, maximum, and median values of chlorophyll a, total particulate nitrogen, total nitrogen, total particulate carbon, total phosphorus, orthophosphate, ammonia, dissolved organic carbon, nitrite-plus-nitrate, dissolved oxygen, pH, and specific conductance at sites FCM1, FCM2, and FCM3, flooded Caledonia Marsh, Upper Klamath Lake, Oregon, 2006.
Table 2. Results of analysis of variance of total phosphorus, total nitrogen, chlorophyll a, orthophosphate, ammonia, and dissolved organic carbon for sites FCM1, FCM2, and FCM3 in flooded Caledonia Marsh, Upper Klamath Lake, Oregon, 2006.
Table 3. Results of analysis of variance of chlorophyll a and total phosphorus for site HDB in Upper Klamath Lake, Oregon, 2005–06.
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Send questions or comments about this report to the author, M.K. Lindenberg, (541) 273-8689 ex. 213.
For more information about USGS activities in Oregon, visit the USGS Oregon Water Science Center home page.
U.S. Department of the Interior | U.S. Geological Survey