Table 2 Surface water nutrient and sediment data seasonally for Prairie Creek East from 2017 to 2024.
Season | Parameter | SRP (PO43−–P) | TP (PO43−–P) | NO3–N | TSS |
|---|---|---|---|---|---|
Spring | Average stream inflow concentration (mg/L) | 0.069 | 0.274 | 8.524 | 41.7 |
Average outflow concentration (mg/L) | 0.016 | 0.119 | 3.924 | 31.9 | |
Concentration reduction (%) | 77.5 | 56.5 | 54.0 | 23.6 | |
Total load in (kg) | 7.99 | 214 | 6,987 | 32,774 | |
Total load out (kg) | 1.18 | 66.2 | 2,451 | 17,116 | |
Load reduction (%) | 85.2 | 69.1 | 64.9 | 47.8 | |
Mass removed (kg) | 48 | 148 | 4,536 | 15,658 | |
Summer | Average stream inflow concentration (mg/L) | 0.111 | 0.323 | 2.097 | 31.6 |
Average outflow concentration (mg/L) | 0.011 | 0.112 | 0.779 | 29.9 | |
Concentration reduction (%) | 89.8 | 65.2 | 62.1 | 5.6 | |
Total load in (kg) | 141 | 419 | 2,695 | 41,916 | |
Total load out (kg) | 10.6 | 108.8 | 808 | 24,491 | |
Load reduction (%) | 92.5 | 74.0 | 70.0 | 41.6 | |
Mass removed (kg) | 130 | 310 | 1,887 | 17,425 | |
Fall | Average stream inflow concentration (mg/L) | 0.089 | 0.331 | 3.490 | 37.7 |
Average outflow concentration (mg/L) | 0.031 | 0.096 | 0.755 | 25.0 | |
Concentration reduction (%) | 65.1 | 71.1 | 78.4 | 33.6 | |
Total load in (kg) | 34.3 | 148 | 885 | 17,097 | |
Total load out (kg) | 8.31 | 32.6 | 213 | 8,168 | |
Load reduction (%) | 75.8 | 78.0 | 75.9 | 52.2 | |
Mass removed (kg) | 26 | 116 | 672 | 8,929 | |
Winter | Average stream concentration (mg/L) | 0.096 | 0.270 | 8.806 | 32.8 |
Total load in (kg) | 0 | 0 | 0 | 0 | |
Total load out (kg) | 0 | 0 | 0 | 0 | |
Annual | Average stream inflow concentration (mg/L) | 0.093 | 0.309 | 4.433 | 36.1 |
Average outflow concentration (mg/L) | 0.017 | 0.111 | 1.767 | 29.5 | |
Concentration reduction (%) | 82.0 | 64.0 | 60.1 | 18.4 | |
Loading rate (g/m2/yr) | 9.1 | 30.7 | 414 | 3,600 | |
Total load in (kg) | 231 | 781 | 10,567 | 91,787 | |
Total load out (kg) | 27 | 208 | 3,472 | 49,775 | |
Load reduction (%) | 88.2 | 73.4 | 67.1 | 45.8 | |
Mass removed (kg) | 204 | 574 | 7,096 | 42,011 | |
Mass removed (g/m2/yr) | 1.00 | 2.81 | 34.8 | 206 | |
Ln (R) ~ ratio of load out/load in | −2.14 | −1.33 | −1.11 | −0.61 |
