Landslides in Alameda County, California, A Digital Database Extracted from Preliminary Photointerpretation Maps of Surficial Deposits by T.H. Nilsen in USGS Open-File Report 75-277

All or part of 25 7.5-minute quadrangles identifying 8465 Landslides
largely slow-moving slides and earth flows in Alameda County,
California, have been converted to a digital-map database, compiled
at 1:24,000 scale and plotted at 1:62,500 scale, that can be
acquired from the U.S. Geological Survey over the Internet or on
magnetic tape.

加利福尼亚州阿拉米达县范围内的25幅完整或部分7.5分幅地形图（7.5-minute quadrangles），共识别出8465处滑坡（Landslides），其中绝大多数为慢速滑坡（slow-moving slides）与土流（earth flows）。上述数据已被整合为数字地图数据库（digital-map database），该库的编绘比例尺为1:24000，印刷成图比例尺为1:62500，可通过互联网或磁带从美国地质调查局（U.S. Geological Survey）获取。