Loading map...

2017 Map of Porters Flat

Name: 2017 Topographic Map of Porters Flat
Creator: U.S. Geological Survey
Published: 2017
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2017

About this map

Porters Flat and the surrounding agricultural lowlands sit along the bend of the Snake River, marking a distinct border between Malheur County, Oregon and Washington County, Idaho. The landscape is defined by an intricate network of irrigation and water management, featuring the Galloway Canal, Grimmet Lateral, and Domby Ditch, which support the farming communities of Eaton and Jonathan. These small settlements are positioned on the West Weiser Flat, where the river's path has created unique features like Porters Island.

To the north, the terrain rises sharply into prominent landmarks such as Kelly Mtn, Haystack, and Rocky Point. Natural water sources like Weiser Warm Springs and Warm Springs Cr suggest a complex hydrology that contrasts with the engineered canal systems below. The map also traces established rural routes including Olds Ferry Rd and Henley Basin Rd, which have historically connected these riverfront properties to the broader region.