Document: NRC Regulatory Guide
Document ID: a094549d-8685-4dad-b90f-c28c7d279a53
Document Type: regulatory_guide
Title: Geologic and Geotechnical Site Characterization Investigations for Nuclear Power Plants + HISTORY – HISTORY 08/2021 – DG-1392 , Proposed Revision 3 07/2014 – Periodic Review of Revision 2 – Reviewed with no issues identified 02/2001 – DG-1101 , Proposed Revision 2 (Rev. 3)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2119/ML21194A176.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.132
CFR Part: 
CFR Title: 

Content:
X B SOURCES OF GEOLOGIC INFORMATION (adapted from EM 1110-1-1804, U.S. ARMY CORPS OF ENGINEERS, 2001) AGENCY TYPE OF INFORMATION DESCRIPTION REMARKS U.S. Geological Survey (USGS) Topographic maps U.S. 7.5-minute series 1:24,000 (supersedes 1:31,680); Puerto Rico 7.5-minute series 1:20,000 (supersedes 1:30,000); Virgin Island 1:24,000 series. Orthophotoquad monocolor and color infrared maps also produced in 7.5-minute and 15-minute series. New index of maps for each State started in 1976. Status of current mapping from USGS regional offices and in monthly USGS bulletin, “New Publications of the U.S. Geological Survey.” Topographic and geological information from the USGS can be accessed through the Earth Science Information Center (ESIC) (1-800-USAMAPS). U.S. 15-minute series 1:62,500 (1:63,360 for Alaska) U.S. 1:100,000-scale series (quadrangle, county, or regional format) U.S. 1:50,000-scale county map series U.S. 1:250,000-scale series Digital elevation models are available for entire U.S. at 1:250,000, and for certain areas at 1:100,000 and 1:24,000 scales Digital line graphs are available for some areas at 1:24,000 and 1:65,000, 1:100,000 for— • hydrography • transportation • U.S. Publication Survey • boundaries • hypsography USGS Geology maps and reports 1:24,000 (1:20,000 Puerto Rico), 1:62,500, 1:100,00, and 1:250,000 quadrangle series includes surficial bedrock and standard (surface and bedrock) maps with major landslide areas shown on later editions 1:500,000 and 1:2,500,000 New index of geologic maps for each State started in 1976. List of geologic maps and reports for each State published periodically. USGS Miscellaneous maps and reports Landslide susceptibility rating, swelling soils, engineering geology, water resources, and ground water. Miscellaneous Investigation Series and Miscellaneous Field Studies Series, maps and reports, not well cataloged; many included as open file reports. USGS Special maps 1:7,500,000 and 1:1,000,000: