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Hydrologic Monitoring in Walnut Canyon National Monument, Water Years 2012 Through 2014.

机译:水文监测在核桃峡谷国家历史文物,水年2012年到2014年。

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Walnut Canyon National Monument (WACA) protects ancient ruins nestled in the sandstone cliffs above a sinuous stretch of Walnut Creek in northern Arizona. The monument is located downstream of two dams constructed in 1904 and 1941. These dams divert much of the flow that historically occurred in the canyon. Repeat photography of the area shows an increase in canyon bottom vegetation since construction of the dams. A recent study of Arizona walnut (Juglans major) in WACA found the population was healthy and stable

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