| Abstract: | To determine site suitability of Yucca Mountain, Nevada, as a potential high-level radioactive waste repository, a study was devised to characterize net infiltration. This study involves a detailed data set produced from 99 neutron boreholes that consisted of volumetric water-content readings with depth from 1984 through 1993 at Yucca Mountain. Boreholes were drilled with minimal disturbance to the surrounding soil or rock in order to best represent field conditions. Boreholes were located in topographic positions representing infiltration zones identified as ridgetops, sideslopes, terraces, and active channels. Through careful field calibration, neutron moisture logs, collected on a monthly basis and representing most of the areal locations at Yucca Mountain, illustrated that the depth of penetration of seasonal moisture, important for escaping loss to evapotranspiration, was influenced by several factors. It was increased (1) by thin soil cover, especially in locations where thin soil is underlain by fractured bedrock; (2) on ridgetops; and (3) during the winter when evapotranspiration is low and runoff is less frequent. This data set helps to provide a seasonal and areal distribution of changes in volumetric water content with which to assess hydrologic processes contributing to net infiltration. |
| Genre: | USGS Numbered Series |
| ProdID: | 27122 |
| Citation Author: | Flint, Lorraine E.; Flint, Alan L. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | iv, 46 p. :ill., map ;28 cm. |
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| Citation Publisher: | U.S. Geological Survey :
Earth Science Information Center, Open-File Reports Section [distributor], |
| Citation Series: | Water-Resources Investigations Report |
| Citation Series Code: | WRI |
| Citation Series Number: | 95-4035 |
| Citation Search Results Text: | Shallow infiltration processes at Yucca Mountain, Nevada : neutron logging data 1984-93; 1995; WRI; 95-4035; Flint, Lorraine E.; Flint, Alan L. |
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| Citation Year: | 1995 |
| Type: | citation/reference |
| Text: | Shallow infiltration processes at Yucca Mountain, Nevada : neutron logging data 1984-93; 1995; WRI; 95-4035; Flint, Lorraine E.; Flint, Alan L. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey :
Earth Science Information Center, Open-File Reports Section [distributor], |
