Hokkaido Lakes Catalog

Central HokkaidoLagoon-origin lake

Lake Poroto

Shiraoi Town ・ ポロト湖

NowLake Poroto today3D view built from GSI elevation data and recent aerial imagery. Use the buttons at top left to view from the north, east, south or west, or drag to rotate. On phones, move two fingers up or down to tilt, and pinch to zoom.

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GSI Tiles (elevation tiles, seamless aerial photos), processed by this site.

1976Lake Poroto in 1976Aerial photo taken by the Geospatial Information Authority of Japan, shown with the film edge and instruments intact.

Aerial photo of Lake Poroto (Shiraoi Town, Hokkaido) taken in 1976
Taken October 5, 1976. Source: aerial photo by the Geospatial Information Authority of Japan (1976), resized.GSI Maps and Aerial Photo Service

About Lake Poroto

A lagoon-origin lake in Shiraoi Town. Upasy, the National Ainu Museum and Park, stands on its shore. The 1991 survey recorded Japanese smelt, carp and Japanese dace, and ducks and swans in winter. Recent aerial photos show large buildings on the lakeside.

Sources: Shiraoi Town official website, Environment Agency of Japan, Lake Survey Report (1993), Environment Agency of Japan, Lake Survey Report: Data Appendix (1993), This site: comparison of 1970s GSI aerial photos with recent GSI imagery (sources in Japanese)

Lake data

Surface elevation
8 m
Transparency
2 m#19 in Hokkaidoas of the 1991 survey
Origin
Lagoon-origin lake
Lake type
Oligotrophic
Freezing
Freezes in winter
Lake number
1130number in the national lake survey

Sources: Environment Agency of Japan, 4th National Survey on the Natural Environment: Lake Survey Report (1993). Area and depth use newer figures from the Geospatial Information Authority of Japan where available. Origin, lake type, transparency, freezing and unmodified status are as of the 1991 survey.

Themes that include Lake Poroto

Nearby lakes

Nearby mountains

Nearby roadside stations

Straight-line distances.