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2023 Map of Diablo Dam, 2023 Print
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2023 Map of Diablo Dam

USGS Topo · Published 2023

About this map

Skagit River hydro-electric infrastructure dominates this mountainous landscape in the 2020s, anchoring the company towns of Newhalem and Diablo. The corridor is defined by a series of impoundments including Gorge Lake and Diablo Lake, which facilitate power generation for the region. Beyond the industrial footprint at Reflector Bar, the map details a high-elevation wilderness protected within North Cascades National Park and the Stephen Mather Wilderness. Permanent ice features like Colonial Glacier and Neve Glacier sit among the summits of Pyramid Peak and Pinnacle Peak. Topography is characterized by significant relief, where Gorge Creek Falls and Ladder Creek Falls drop steeply toward the river valley. Numerous recreation routes, such as the Sourdough Trl and Newhalem Creek Trl, provide access to the surrounding peaks.

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Map Details

Date Portrayed2023
Date Published2023
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions24 x 29 inches

Editions of this 2023 Diablo Dam Map

This is the sole edition of this map. No revisions or reprints were ever made.

Historical Maps of Newhalem Through Time

116 maps found

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain