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Hydrologic reconnaissance of Mineral Creek near Silverton, Colo., was conducted from June 25-27, 2020. Both banks of Mineral Creek and the adjacent hillsides were walked, starting near the ghost town of Chattanooga and proceeding downstream to the confluence of Mineral Creek with the Middle Fork of Mineral Creek. The purpose of this reconnaissance was to identify areas of emergent groundwater on the right (EGR) and left (EGL) banks, a task that was accomplished by following observed surface flows (seeps and springs) upgradient to the point at which they emanated from the subsurface. Coordinates, using a handheld global positioning system (GPS) device, and photographs were obtained at these locations of emergent...
The Rosa mule deer (Odocoileus hemionus) migrate an average of 45 miles from northwest New Mexico to southwest Colorado. Their winter range is located in the upper San Juan Basin, east of the Navajo Reservoir, and is dominated by pinyon juniper woodlands and sagebrush grasslands. The Rosa herd utilize three distinct areas as summer range: the lower elevation Valle Seco, consisting primarily of ponderosa pine woodland and big sagebrush shrubland, and the higher elevation North and South San Juan Mountains, consisting of ponderosa pine and aspen-mixed woodlands. The herd collectively migrate northeast from their winter range for around 12 miles before a second route branches off the main corridor, with these individuals...
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Airborne electromagnetic (AEM) and magnetic survey data were collected during April and May 2019 along 1,467 line-kilometers in the San Juan-Silverton Caldera complex, Colorado, in the Southern Rocky Mountain Volcanic Field. Data were acquired by Geotech, Ltd. with the versatile time-domain electromagnetic (VTEM-ET) system together with a Geometrics optically pumped cesium vapor magnetometer. The survey was flown at a mean flight height of 140 meters (m) above terrain in various line directions and line spacings ranging from 150 m to 600 m. Multiple variable-spaced lines were flown along rivers and streams in the survey area. USGS provided the contractor with the San Juan National Forest Lidar Point Cloud elevation...
The Rosa mule deer (Odocoileus hemionus) migrate an average of 45 miles from northwest New Mexico to southwest Colorado. Their winter range is located in the upper San Juan Basin, east of the Navajo Reservoir, and is dominated by pinyon juniper woodlands and sagebrush grasslands. The Rosa herd utilize three distinct areas as summer range: the lower elevation Valle Seco, consisting primarily of ponderosa pine woodland and big sagebrush shrubland, and the higher elevation North and South San Juan Mountains, consisting of ponderosa pine and aspen-mixed woodlands. The herd collectively migrate northeast from their winter range for around 12 miles before a second route branches off the main corridor, with these individuals...
The Rosa mule deer (Odocoileus hemionus) migrate an average of 45 miles from northwest New Mexico to southwest Colorado. Their winter range is located in the upper San Juan Basin, east of the Navajo Reservoir, and is dominated by pinyon juniper woodlands and sagebrush grasslands. The Rosa herd utilize three distinct areas as summer range: the lower elevation Valle Seco, consisting primarily of ponderosa pine woodland and big sagebrush shrubland, and the higher elevation North and South San Juan Mountains, consisting of ponderosa pine and aspen-mixed woodlands. The herd collectively migrate northeast from their winter range for around 12 miles before a second route branches off the main corridor, with these individuals...


    map background search result map search result map Hydrologic reconnaissance to identify areas of emergent groundwater, Mineral Creek, near Silverton, Colorado, June 2020 Airborne electromagnetic and magnetic survey data, Silverton, Colorado, 2019 Migration Corridors of Mule Deer in the Rosa Herd in New Mexico Migration Stopovers of Mule Deer in the Rosa Herd in New Mexico Winter Ranges of Mule Deer in the Rosa Herd in New Mexico Hydrologic reconnaissance to identify areas of emergent groundwater, Mineral Creek, near Silverton, Colorado, June 2020 Winter Ranges of Mule Deer in the Rosa Herd in New Mexico Airborne electromagnetic and magnetic survey data, Silverton, Colorado, 2019 Migration Stopovers of Mule Deer in the Rosa Herd in New Mexico Migration Corridors of Mule Deer in the Rosa Herd in New Mexico