Completion reports, core logs, and hydrogeologic data from wells and piezometers in Prospect Gulch, San Juan County, Colorado

Johnson, Raymond H.; Yager, Douglas B.

Abstract:

In the late nineteenth century, San Juan County, Colorado, was the center of a metal mining boom in the San Juan Mountains. Although most mining activity ceased by the 1990s, the effects of historical mining continue to contribute metals to ground water and surface water. Previous research by the U.S. Geological Survey identified ground-water discharge as a significant pathway for the loading of metals to surface water from both acid-mine drainage and acid-rock drainage. In an effort to understand the ground-water flow system in the upper Animas River watershed, Prospect Gulch was selected for further study because of the amount of previous data provided in and around that particular watershed. In support of this ground-water research effort, wells and piezometers were installed to allow for coring during installation, subsurface hydrologic testing, and the monitoring of ground-water hydraulic heads and geochemistry. This report summarizes the data that were collected during and after the installation of these wells and piezometers and includes (1) subsurface completion details, (2) locations and elevations, (3) geologic logs and elemental data, (4) slug test data for the estimation of subsurface hydraulic conductives, and (5) hydraulic head data.

Genre:

USGS Numbered Series

ProdID:

75833

Citation Author:

Johnson, Raymond H.; Yager, Douglas B.

Citation Contributing Office:

Citation Datum:

Citation Day:

Citation Edition:

Version 1.01

Citation Editor:

Citation End Page:

Citation Issue:

Citation Keywords:

Citation Language:

ENGLISH

Citation Larger Work Title:

Citation LatN:

0375800

Citation LatS:

0374500

Citation LonE:

-1073000

Citation LonW:

-1075030

Citation Month:

Citation No Pagination:

Citation Number Of Pages:

Citation Online Only Flag:

Citation Phsyical Description:

v, 32 p.; data files

Citation Projection:

Citation Public Comments:

Citation Publisher:

Citation Series:

Open-File Report

Citation Series Code:

OFR

Citation Series Number:

2006-1030

Citation Search Results Text:

Completion reports, core logs, and hydrogeologic data from wells and piezometers in Prospect Gulch, San Juan County, Colorado; 2006; OFR; 2006-1030; Johnson, Raymond H.; Yager, Douglas B.

Citation Start Page:

Citation Volume:

Citation Year:

2006

Type:

citation/reference

Text:

Completion reports, core logs, and hydrogeologic data from wells and piezometers in Prospect Gulch, San Juan County, Colorado; 2006; OFR; 2006-1030; Johnson, Raymond H.; Yager, Douglas B.