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Hannah Harris, a fisheries biologist on the Tongass National Forest, points to a map of karst beside a salmon-bearing stream on Prince of Wales Island in Alaska, Sept. 25, 2025. The stream is part of a karst system with underground caves that can cause the channel to run dry or flood quickly when the underground systems become overwhelmed during precipitation events. A bridge was installed at this location to replace an undersized culvert that was inhibiting fish passage. (Forest Service photo by Paul Robbins Jr.)
| Date Taken: | 09.25.2025 |
| Date Posted: | 04.22.2026 11:49 |
| Photo ID: | 9631062 |
| VIRIN: | 250925-O-TT560-6621 |
| Resolution: | 3867x4833 |
| Size: | 3.41 MB |
| Location: | ALASKA, US |
| Web Views: | 2 |
| Downloads: | 0 |
This work, Fisheries biologist monitors karst stream on the Tongass [Image 20 of 20], by Paul Robbins Jr., identified by DVIDS, must comply with the restrictions shown on https://www.dvidshub.net/about/copyright.
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