Concrete Dams That Have Been Subjected to Significant Shaking (PHGA > 0.3 g)
| Dam (completed) |
Country |
Ht feet (m) |
EQ Name and date |
Dist. To fault miles (km) |
Mag |
PHGA (g) |
Remarks |
|
| Lower Crystal Springs (1890) |
USA |
154 (47) |
600 (183) |
San Francisco 18 Apr 1906 |
0.21 (0.3) |
8.3 |
>0.68 (est) |
“Not the slightest crack” |
| Koyna (1963) |
India |
338 (103) |
2800 (853) |
Koyna 11 Dec 1967 |
1.8(3) |
6.5 |
0.63 |
Cracks in both faces |
| Williams (1895) |
USA |
69 (21) |
87 (27) |
Loma Prieta 17 Oct 1989 |
6 (9.7) |
7.1 |
0.6(est) |
No damage |
| Gohonmatsu (1900) |
Japan |
108 (33) |
361 (110) |
Kobe 17 Jan 1995 |
0 (1km) |
7.2 |
0.83 |
No damage of this masonry dam |
| Shih Kang (1977) |
Taiwan |
70 (21.4) |
1171 (357) |
Chi Chi 21 Sep 1999 |
0 (0) |
7.6 |
0.51 0.53 V |
Vertical disp. of 29 ft (9 m), Bays rupture |
| Mingtan (1990) |
Taiwan |
269(82) |
? |
Chi Chi 21 Sep 1999 |
7.5 (12) |
7.6 |
0.4 to 0.5 (est) |
No damage |
| Kasho (1989) |
Japan |
152 (46.4) |
571 (174) |
Western Tottori 6 Oct 2000 |
1.9 or 5 (3 or 8) |
7.3 |
0.54 b 2.09 c |
Cracks in Control Building at crest |
| Uh (1989) |
Japan |
46 (14) |
112 (34) |
Western Tottori 6 Oct 2000 |
0.6 or 8 (1 to 3) |
7.3 |
1.16 Surf |
Small crack at spillway base |
| Miyatoko RCC (1993) |
Japan |
157.5 (48) |
?? |
Tohoku 11 Mar 2011 |
84 (135) |
9.0 |
> 0.7 |
No Damage |
| Takou (2007) |
Japan |
252 (77) |
1056 (322) |
Tohoku 11 Mar 2011 |
68 (109) |
9.0 |
> 0.4 |
Cracking of gatehouse walls at crest |
| Bear Valley (1912, 1988) |
USA |
92 (28) |
360 (110) |
Landers 28 Jun 1992, Big Bear 29 Jun 1992 |
28 (45), 9 (14.5) |
7.4, 6.6 |
0.57 |
Multiple arch modified to gravity dam in 1988. No damage, except slight displacement of crest bridge girders |
| Gibraltar (1920, 1990) |
USA |
169 (52) |
600 (183) |
Santa Barbara 29 Jun 1925 |
|
6.3 |
> 0.3 (est) |
No damage. Modified in 1990 with RCC |
| Pacoima (1929) |
USA |
372 (113) |
589 (180) |
San Fernando 9 Feb 1971 |
3 (5) |
6.6 |
0.6 to 0.8 |
No cracks in arch. Open joint between arch and thrust block |
| Pacoima (1929) |
USA |
372 (113) |
589 (180) |
Northridge 17 Jan 1994 |
11.4 (18) |
6.8 |
0.53 >2.3 c |
Open joint (2”) between arch and thrust block |
| Ambiesta (1956) |
Italy |
194 (59) |
475 (145) |
Gemona-Friuli 6 May 1976 |
12.4 (20) |
6.5 |
0.33 at rt abut |
No damage |
| Rapel (1968) |
Chile |
361 (110) |
886 (270) |
Santiago 3 Mar 1985 |
28 (45) |
7.8 |
0.31 near dam |
Damage to spillway and intake tower, dam performed well |
| Techi (1974) |
Taiwan |
607 (185) |
951 (290) |
Chi Chi 21 Sept 1999 |
|
7.6 |
0.5 b 0.86 c |
Local cracking of curb at dam crest |
| Shapai RCC (2003) |
China |
433 (132) |
820 (250) |
Wechuan 12 May 2008 |
7.8 (12) |
8.0 |
> 0.5 (est) |
No damage |
| Hsinfengkiang (1959) |
China |
344 (105) |
1444 (440) |
19 Mar 1962 |
3 to fault (5) |
6.1 |
0.54 c afs |
Horiz cracks in top part of dam |
| Sefid Rud (1962) |
Iran |
348 (106) |
1368 (417) |
Manjil 21 Jun 1990 |
Near dam site |
7.7 |
0.714 (est) |
Horiz cracks near crest, minor disp of blocks |
Legend: b=base, c=Crest, est=Estimate, disp.=Displacement, rt abut=Right Abutment, Ht-Height, V=Vertical, Mag=Magnitude (ML or mb for less than 6.5 and MS above 6.5), Surf=Surface, aft=Aftershock, PHGA=Peak horizontal ground acceleration
