Koyama-cho, Yokohama Midori, Kanagawa: flood, tsunami, quake and landslide risk

小山町こやまちょう・横浜市緑区・神奈川県

Koyama-cho, Yokohama Midori. Flood: 0.5–3 m. Quake: 44.3% chance of strong shaking in 30 years.

Flood, assumed maximum

0.5–3 m

Tsunami

Not coloured on this tile

Landslide

Debris flow: no tile finer than zoom 11. Steep slope: not in the zone. Landslide: no tile finer than zoom 10.

Strong quake in 30 years

44.3%, 30-year chance of intensity 6-lower or higher

Ground

Valley bottom. Shakes 1.34× the bedrock.

Nearby stations

中山 Sta. (920 m), 川和町 Sta. (1420 m), 十日市場 Sta. (1710 m)

These figures are read at the centre of Koyama-cho. Hazards change from street to street, so check the exact address on the live map.

Map: Geospatial Information Authority of Japan. The pin marks the centre of the town.

What to check before you rent or buy

• Not coloured means the Geospatial Information Authority tile has no flood colour here. Some prefecture-managed rivers are missing from that dataset.
• No national liquefaction tile. Check the municipal hazard map before you offer. This screen does not paint liquefaction.
• Straight-line distance, not the walk.

More in Yokohama Midori

• All towns in Yokohama Midori
• Kitahassaku-cho 北八朔町
• Nishihassaku-cho 西八朔町
• Aoto-cho 青砥町
• Nakayama 中山
• Kanagawa

Sources

Geospatial Information Authority of Japan: Pale map, town names, flood, tsunami, and landslide caution tiles. J-SHIS: Y2024 average case, 30-year chance of intensity 6-lower or higher. HeartRails: Town name readings, and nearest stations as a straight-line distance. Town centres: Ministry of Land, Infrastructure, Transport and Tourism. Data fetched 2026-10-11.

This repackages public Japanese government hazard data for personal screening. It is not insurance, legal, or engineering advice. Confirm with municipal maps and your agent’s important-matters explanation before purchase.