Channel widening, downstream, upstream, and total footprint for each dam.

* footprint is estimated based on available dataDownstream 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.* 河道影响范围（footprint）基于现有数据估算得到。下游影响范围通过测定大坝下游浅滩（riffles）的基质中值粒径（D50）分布确定（详见图6与图8）。河道展宽范围与上游影响范围则通过航空摄影手段测定。影响范围以平均湿润宽度的倍数形式表征，单位千米标注于括号内。本次计算采用的平均湿润宽度为：尼欧肖河（Neosho River）0.022千米，科顿伍德河（Cottonwood River）0.035千米。