• Arch
• Concrete
• Rockfill
• Buttress
• Earthfill
• Others

• Height 0m 20m 30m 50m 80m 130m to 0m 20m 30m 50m 80m 130m —
• Built year — 1900 1920 1940 1960 1980 2000 to 1900 1920 1940 1960 1980 2000 —

10 dams closest to current center

Always use independent icons even for wider area map. (If checked, you can use height and built year filters even when zoomed out. But it may slow your computer down.)

Click this link and the dam is shown in Google Maps (classic). Then manually click "Save to map" on Google Maps.

Colored Rel.

Colored Relief by Japanese GSI

Map data © Japanese GSI, Japan Coast Guard

All Rivers & Lakes

All Rivers, All Lakes & Topography

Map data by gridscapes.net

Note

• Dam data on this site is based on Dams in Japan with permission from its author, The Japan Dam Foundation. Any unauthorized use of the data is prohibited.
• Dams marked "location unconfirmed" on Dams in Japan are not plotted.
• Colored relief map is from GSI Map of Japanese GSI. Ocean area of the relief is based on data by Hydrographic and Oceanographic Department of Japan Coast Guard.
• All Rivers, All Lakes & Topography map is from gridscapes.net.
• Japanese Dam Finder works with the following browsers. If you feel this site runs slow, try browsers other then Internet Explorer. (This site uses a lot of JavaScript.)
  • Firefox3.0 and later
  • Chrome
  • IE8.0 and later
• This site is built by OnTarget Inc. Though you can use this site for free of charge, all rights are reserved. If you have any comment or inquiry, send e-mail to

Usage

• This site keeps location and zoom level of your previous visit in cookies.
• 4-digit numbers displayed in balloons and list are Dam ID found on "Dams in Japan" .
• Dam icons are primarily based on appearance.

  Arch

  Arch (A), Gravity arch (GA), Multiple arch (MA)

  Concrete

  Gravity (G), Gravity concrete and fill (GF), Hollow gravity (HG)

  Rockfill

  Rockfill (R)

  Buttress

  Buttress (B)

  Earthfill

  Earthfill (E)

  Others

  Trapezoidal CSG(CSG), (FG), Asphalt face fill (FA), Asphalt core fill (FC)

History

Last update of dam data: 2020年01月25日

2018年9月10日	Map type "All Rivers, All Lakes and Topography" added.
2015年11月6日	"Always use independent icons" function added.
2015年3月14日	Map type "Colored Relief" added.
2014年8月8日	Updated Maps API version from 3.9 to 3.16, jQuery from 1.7.1 to 1.11.1.
2014年8月6日	Changed "Send to Google My Places" destination to classic Google Maps, because new Google Maps doesn't allow saving lat/lng points.
2012年12月2日	Fixed unclickable link text in InfoWindow on Chrome.
2012年9月28日	"Send to Google My Places" function added. However, you have to manually save to my places due to lack of My Places API.
2012年9月20日	Updated Maps API version from 3.7 to 3.9.
2012年4月30日	English version published.

Copyright (C) 2012 OnTarget Inc. All rights reserved.