The following is a list of dams in Nagano Prefecture, Japan.

Name	Location	Opened	Height (meters)	Image
Achibake Dam	35°57′37″N 138°38′35″E[1]
Akiyama Dam	35°57′37″N 138°38′36″E
Amekawa Dam	36°11′5″N 138°33′7″E[1]
Asakawa Dam	36°41′26″N 138°11′28″E[2]	2016	53
Azusako Dam	35°57′32″N 138°40′14″E
Dorogawa Dam	36°19′31″N 138°34′28″E
Haino Dam	36°37′50″N 138°20′47″E
Hiraoka Dam	35°16′57″N 137°50′48″E	1951	62.5
Higashijo Dam	36°22′54″N 138°3′36″E[1]
Himekawa No.2 Dam	36°43′8″N 137°53′5″E[1]	1935
Himekawa No.3 Dam	36°48′50″N 137°54′29″E[1]
Horikirizawa Dam	36°39′53″N 138°11′35″E
Ikusaka Dam	36°25′27″N 137°56′17″E	1964	19.5
Ikuta Dam
Inagawa Dam	35°41′30″N 137°44′21″E	1977	43
Inekoki Dam	36°10′6″N 137°46′16″E	1968	60
Iwakura Dam	35°17′2″N 137°42′32″E	1936	25
Kanabara Dam	36°24′30″N 138°21′44″E		36.5[3]
Katagiri Dam	35°37′15″N 137°51′27″E		59.2[3]
Kiso Dam	35°49′11″N 137°40′40″E[1]		35.2[3]
Kitayama Dam	36°28′58″N 138°3′4″E[1]	1999	43
Kosaka Dam	36°15′54″N 138°32′55″E		38.5[3]
Koshibu Dam	35°36′25″N 137°58′44″E		105[3]
Koya Dam	36°7′26″N 138°35′37″E		48.5[3]
Kurokawa Dam	35°51′19″N 137°42′25″E
Kurosawa Dam	36°14′53″N 137°48′58″E[1]
Lake Kutsuzawako Dam	36°6′53″N 137°54′11″E		27.4[3]
Makio Dam	35°49′27″N 137°36′10″E
Matsukawa Dam	35°31′52″N 137°46′41″E	1974
Midono Dam	36°9′14″N 137°44′53″E		95.5[3]
Lake Midoriko Dam	36°5′31″N 137°59′39″E		22[3]
Minakata Dam	35°42′12″N 137°57′27″E
Miure Dam	35°49′27″N 137°23′38″E[1]	1945	83.2
Minamiaiki Dam	36°0′18″N 138°39′11″E[1]	2005	136
Minochi Dam	36°34′22″N 138°2′44″E[1]	1943	25.3[3]
Minowa Dam	35°55′41″N 138°1′50″E	1992	72[3]
Misogawa Dam	35°58′38″N 137°46′12″E[1]	1996	140[3]
Lake Misuzuko Dam	36°15′49″N 138°1′1″E	1951	19[3]
Miwa Dam	35°48′51″N 138°4′45″E
Mizukami Dam	36°21′1″N 138°2′23″E		38[3]
Murosawa Dam	36°26′42″N 138°2′39″E[1]
Nagawado Dam	36°7′58″N 137°43′6″E	1969	155
Nanakura Dam	36°29′25″N 137°44′8″E[1]		125[3]
Nagai Dam	36°26′55″N 138°6′18″E[1]
Narai Dam	35°56′7″N 137°48′32″E[1]		60[3]
Nishiotaki Dam	36°58′37″N 138°29′5″E[1]
Nishiura Dam	36°19′26″N 138°24′48″E
Otagiri Dam	36°37′12″N 138°7′23″E[1]	1954	21.3
Okubo Dam
Okususobana Dam	36°43′30″N 137°58′0″E
Ōmachi Dam	36°30′53″N 137°46′52″E	1985
Onikuma Dam	36°25′8″N 137°59′59″E		36.5[3]
Otakigawa Dam	35°48′25″N 137°27′21″E[1]		18.2[3]
Saigawa Dam	36°18′26″N 137°55′51″E	1923
Sasadaira Dam	36°36′26″N 138°4′56″E		19.3[3]
Sawando Dam
Sayamaike Dam	36°19′41″N 138°10′9″E
Sebadani Dam	36°10′13″N 137°38′1″E		22.7[3]
Shionoiri Dam	36°22′57″N 138°8′20″E		18.5[3]
Sugadaira Dam	36°30′8″N 138°20′56″E		41.8[3]
Susado Dam
Susobana Dam	36°40′6″N 138°7′12″E[1]	1969
Taira Dam	36°28′41″N 137°57′13″E[3]		19.5
Takase Dam	36°28′26″N 137°41′25″E[1]		176[3]
Takato Dam	35°49′46″N 138°3′47″E		30.9[3]
Tatsugasawa Dam
Tokiwa Dam	35°50′21″N 137°37′31″E[3]		24.1[3]
Toyooka Dam	36°37′15″N 138°22′41″E	1994	81
Uchimura Dam	36°17′35″N 138°6′40″E		51.3[3]
Wachino Dam	35°17′55″N 137°47′22″E[1]
Yamaguchi Dam	35°35′12″N 137°34′13″E[1]	29 Dec 1957	38.6[3]
Yasuoka Dam	35°22′49″N 137°48′38″E[1]		50[3]
Yatategi Sabo Dam
Yoji Dam	36°9′36″N 138°33′58″E		42[3]
Yokokawa Dam	35°58′54″N 137°54′19″E[1]		41[3]
Yomikaki Dam	35°39′32″N 137°37′13″E[1]		32.1[3]
Yukawa Dam	36°18′34″N 138°32′36″E[1]		50[3]
Yunose Dam	36°39′50″N 138°8′0″E[3]		18[3]

• Media related to Dams in Nagano prefecture at Wikimedia Commons