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. Author manuscript; available in PMC: 2021 Jan 7.
Published in final edited form as: Environ Sci Technol. 2019 Dec 11;54(1):286–296. doi: 10.1021/acs.est.9b06620

Figure 1.

Figure 1.

The Colorado River Watershed and sub-watersheds in the Department of Madre de Dios, Peru, in which the direction of water flow is generally north- and eastward. Surface water (SW) sampling locations (red circles) at the outlet of each watershed and several mid watershed points. Ground water (GW) samples (yellow circles) were taken in two communities, Puerto Luz (GW 1–5) and Delta-1 (GW 6–8). The Huepetuhe and Delta-1 mining areas are shaded yellow. The Huasoroco River outlet drains the Cupodne, Upper Colorado, and Huasoroco watersheds. The Middle Colorado River Outlet drains the Upper Colorado River, Cupodne, Huasoroco, and Middle Colorado River watersheds. The Puquiri River Outlet drains the Puquiri Watershed. The Lower Colorado River Outlet (Pour Point, SW9) drains the entire Colorado River Watershed, including the Puquiri Watershed. Base map sources: Esri, DigitalGlobe, GeoEye, i-cubed, USDA FSA, USGS, AEX, Getmapping, Aerogrid, IGN, IGP, swisstopo, and the GIS User Community.