Table 2. Channel widening, downstream, upstream, and total footprint for each dam.
Downstream footprints were determined by measuring the distribution of median substrate size (D50) from riffles downstream of dam (see Figs 6 and 8). Extent of channel widening, and upstream footprints were determined using aerial photography. Footprints are expressed in terms of multiples of mean wetted width, with kilometers in parentheses. The mean wetted width used in calculations was 0.022 km for the Neosho River and 0.035 km for the Cottonwood River.
| River | Site | Channel widening (No. widths (km)) | Upstream footprint (No. widths (km)) | Downstream footprint (No. widths (km)) | Total footprint (No. widths (km)) |
|---|---|---|---|---|---|
| Upper Neosho | Riverwalk | 2 (0.05) | 100 (2.2) | 59 (1.3) | 160 (3.5) |
| Correll | 11 (0.25) | 300 (6.6) | 55 (1.2) | 355 (7.8) | |
| Ruggles | 10 (0.21) | 295 (6.5) | 55 (1.2) | 350 (7.7) | |
| Emporia | 9 (0.2) | 127 (2.8) | 9 (0.2) | 136 (3) | |
| Lower Cottonwood | Cottonwood Falls | 6 (0.22) | 391 (13.7) | 46 (1.6) | 437 (15.3) |
| Soden | 6 (0.21) | 245 (8.6) | 40 (1.4) | 286 (10) | |
| Overall | Mean | 7 (0.19) | 243 (6.7) | 44 (1.2) | 287 (7.9) |
| Total | 44 (1.14) | 1458 (40.4) | 264 (6.9) | 1,724 (47.3) | |
| Range | 2, 11 (0.05, 0.25) | 100, 391 (2.2, 13.7) | 9, 59 (0.2, 1.6) | 136, 437 (3.0, 15.3) |
* footprint is estimated based on available data