Mainstem Rivers of the Conterminous United States (ver. 2.0, February 2023)
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Mainstem rivers are the backbone of a connected network of hydrologic units that cover the landscape. A mainstem connects a headwater source area to an outlet. This...
干流是构成覆盖全域地表景观的水文单元(hydrologic units)连通网络的核心骨架。单条干流将河源区(headwater source area)与流域出口(outlet)相连。此……



