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Original Articles

Loading of phosphorus and nitrogen to Lake Waco, Texas

Pages 123-146 | Published online: 23 Jul 2010

Figures & data

Figure 1 Location of Lake Waco and in-lake sampling stations, Waco, TX.

Figure 1 Location of Lake Waco and in-lake sampling stations, Waco, TX.

Figure 2 Variation in precipitation at Waco Airport from 1970 through 2005.

Figure 2 Variation in precipitation at Waco Airport from 1970 through 2005.

Table 1 Information for key sampling stations in the Lake Waco watershed.

Figure 3 Major rivers, key sampling stations, dairy farms and wastewater discharge locations in the Lake Waco watershed. Station descriptions are in . See Online Supplement for a detailed sampling station schematic. NBR = North Bosque River, MBR = Middle Bosque River, SBR = South Bosque River, HC = Hog Creek.

Figure 3 Major rivers, key sampling stations, dairy farms and wastewater discharge locations in the Lake Waco watershed. Station descriptions are in Table 1. See Online Supplement for a detailed sampling station schematic. NBR = North Bosque River, MBR = Middle Bosque River, SBR = South Bosque River, HC = Hog Creek.

Table 2 Summary of phosphorus loading results for selected individual stations.

Table 3 Summary of nitrogen loading results for selected individual stations.

Table 4 Export coefficients for water, phosphorus and nitrogen from selected drainage areas.

Table 5 Mean dry and wet weather flows and nutrient concentrations at selected stations.

Table 6 Mean loads and nutrient ratios at selected stations.

Table 7 Loads from additional areas and sources to Lake Waco.

Figure 4 Apportionment of loads among sources for Lake Waco: A. Flow; B. TP; C. OP; D. TN.

Figure 4 Apportionment of loads among sources for Lake Waco: A. Flow; B. TP; C. OP; D. TN.

Table 8 In-lake concentrations for phosphorus and nitrogen at selected stations.

Table 9 Wastewater inputs to tributaries of Lake Waco.

Table 10 Nutrient export coefficients and loading for land in subwatersheds including dairy operations.

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