Distance and direction of nearest 20 strong motion seismographs from earthquake. Such seismographs are of interest to structural engineers. Earthquake is 10.2 km NW of Walla Walla, WA. VA Hospital Bldg. #109 (VA) 35.4 km ESE of Ice Harbor Dam, WA. Snake R. (ACOE) 68.1 km ENE of McNary Dam, OR. (ACOE) 68.5 km ESE of 300 Area (H3O) 77.7 km ESE of 400 Area (H4O) 96.3 km ESE of 200 East (H2E) 103.1 km ESE of 200 West (H2W) 105.1 km ESE of 100-K Area (H1K) 120.2 km NE of Willow Creek Dam, OR.(ACOE) 173.3 km WSW of Dworshak Dam, ID. (ACOE) 178.5 km ENE of John Day Dam, OR. (ACOE) 191.0 km SSW of Spokane, WA. VA Hospital Bldg. 3 (VA) 208.5 km S of Grand Coulee Dam, WA. (WPRS) 215.5 km ENE of The Dalles Dam, OR. (ACOE) 226.9 km SSE of Chief Joseph Dam, WA. (ACOE) 285.2 km ESE of Howard Hanson Dam, WA. (ACOE) 289.3 km ESE of Mud Mountain Dam, WA. (ACOE) 298.2 km ESE of RAW - Raver BPA SMO-IDS20 301.9 km SE of Tolt River Dam, WA. (SWD) 302.2 km ESE of ELW - EchoLakeBPA SMO-IDS20