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Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Significance: The Van Arsdale Dam is the oldest combined concrete gravity and earth filled dam in California. This specific type of dam is rare in both California and the United States. Its unusual design mak... More

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Significance: The Van Arsdale Dam is the oldest combined concrete gravity and earth filled dam in California. This specific type of dam is rare in both California and the United States. Its unusual design mak... More

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Significance: In 1907, the Patapsco Electric and Manufacturing Company contracted Ambursen Hydraulic Construction Company to build the Bloede Dam using Nils F. Ambursen's patent. The proposed dam would generate... More

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Significance: In 1907, the Patapsco Electric and Manufacturing Company contracted Ambursen Hydraulic Construction Company to build the Bloede Dam using Nils F. Ambursen's patent. The proposed dam would generate... More

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania County, WA

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania Count...

Significance: The dam and fish ladder were constructed by the CCC, Company 944 in 1935-36. The structure, a concrete arch dam, is believed to be one of the largest power generation plants constructed solely by ... More

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Significance: In 1907, the Patapsco Electric and Manufacturing Company contracted Ambursen Hydraulic Construction Company to build the Bloede Dam using Nils F. Ambursen's patent. The proposed dam would generate... More

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Significance: The Van Arsdale Dam is the oldest combined concrete gravity and earth filled dam in California. This specific type of dam is rare in both California and the United States. Its unusual design mak... More

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Significance: The Van Arsdale Dam is the oldest combined concrete gravity and earth filled dam in California. This specific type of dam is rare in both California and the United States. Its unusual design mak... More

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania County, WA

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania Count...

Significance: The dam and fish ladder were constructed by the CCC, Company 944 in 1935-36. The structure, a concrete arch dam, is believed to be one of the largest power generation plants constructed solely by ... More

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania County, WA

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania Count...

Significance: The dam and fish ladder were constructed by the CCC, Company 944 in 1935-36. The structure, a concrete arch dam, is believed to be one of the largest power generation plants constructed solely by ... More

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Significance: The Van Arsdale Dam is the oldest combined concrete gravity and earth filled dam in California. This specific type of dam is rare in both California and the United States. Its unusual design mak... More

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Significance: The Van Arsdale Dam is the oldest combined concrete gravity and earth filled dam in California. This specific type of dam is rare in both California and the United States. Its unusual design mak... More

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania County, WA

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania Count...

Significance: The dam and fish ladder were constructed by the CCC, Company 944 in 1935-36. The structure, a concrete arch dam, is believed to be one of the largest power generation plants constructed solely by ... More

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania County, WA

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania Count...

Significance: The dam and fish ladder were constructed by the CCC, Company 944 in 1935-36. The structure, a concrete arch dam, is believed to be one of the largest power generation plants constructed solely by ... More

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Significance: The Van Arsdale Dam is the oldest combined concrete gravity and earth filled dam in California. This specific type of dam is rare in both California and the United States. Its unusual design mak... More

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania County, WA

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania Count...

Significance: The dam and fish ladder were constructed by the CCC, Company 944 in 1935-36. The structure, a concrete arch dam, is believed to be one of the largest power generation plants constructed solely by ... More

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania County, WA

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania Count...

Significance: The dam and fish ladder were constructed by the CCC, Company 944 in 1935-36. The structure, a concrete arch dam, is believed to be one of the largest power generation plants constructed solely by ... More

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania County, WA

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania Count...

Significance: The dam and fish ladder were constructed by the CCC, Company 944 in 1935-36. The structure, a concrete arch dam, is believed to be one of the largest power generation plants constructed solely by ... More

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania County, WA

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania Count...

Significance: The dam and fish ladder were constructed by the CCC, Company 944 in 1935-36. The structure, a concrete arch dam, is believed to be one of the largest power generation plants constructed solely by ... More

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Significance: In 1907, the Patapsco Electric and Manufacturing Company contracted Ambursen Hydraulic Construction Company to build the Bloede Dam using Nils F. Ambursen's patent. The proposed dam would generate... More

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Significance: In 1907, the Patapsco Electric and Manufacturing Company contracted Ambursen Hydraulic Construction Company to build the Bloede Dam using Nils F. Ambursen's patent. The proposed dam would generate... More

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania County, WA

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania Count...

Significance: The dam and fish ladder were constructed by the CCC, Company 944 in 1935-36. The structure, a concrete arch dam, is believed to be one of the largest power generation plants constructed solely by ... More

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Significance: The Van Arsdale Dam is the oldest combined concrete gravity and earth filled dam in California. This specific type of dam is rare in both California and the United States. Its unusual design mak... More

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Significance: The Van Arsdale Dam is the oldest combined concrete gravity and earth filled dam in California. This specific type of dam is rare in both California and the United States. Its unusual design mak... More

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania County, WA

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania Count...

Significance: The dam and fish ladder were constructed by the CCC, Company 944 in 1935-36. The structure, a concrete arch dam, is believed to be one of the largest power generation plants constructed solely by ... More

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Significance: The Van Arsdale Dam is the oldest combined concrete gravity and earth filled dam in California. This specific type of dam is rare in both California and the United States. Its unusual design mak... More

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Significance: The Van Arsdale Dam is the oldest combined concrete gravity and earth filled dam in California. This specific type of dam is rare in both California and the United States. Its unusual design mak... More

Indian ladder, Delaware Water Gap, Pa

Indian ladder, Delaware Water Gap, Pa

Publisher attribution based on provenance. Gottheim collection code: GDWG 1. Forms part of the Larry Gottheim Collection of stereographs and other early photographs (Library of Congress) Purchase; Larry Gotthe... More

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Significance: In 1907, the Patapsco Electric and Manufacturing Company contracted Ambursen Hydraulic Construction Company to build the Bloede Dam using Nils F. Ambursen's patent. The proposed dam would generate... More

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania County, WA

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania Count...

Significance: The dam and fish ladder were constructed by the CCC, Company 944 in 1935-36. The structure, a concrete arch dam, is believed to be one of the largest power generation plants constructed solely by ... More

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Significance: In 1907, the Patapsco Electric and Manufacturing Company contracted Ambursen Hydraulic Construction Company to build the Bloede Dam using Nils F. Ambursen's patent. The proposed dam would generate... More

Bonneville Dam and fish ladders, Oregon

Bonneville Dam and fish ladders, Oregon

Title and other information from caption card. Transfer; United States. Office of War Information. Overseas Picture Division. Washington Division; 1944. More information about the FSA/OWI Collection is availabl... More

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania County, WA

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania Count...

Significance: The dam and fish ladder were constructed by the CCC, Company 944 in 1935-36. The structure, a concrete arch dam, is believed to be one of the largest power generation plants constructed solely by ... More

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania County, WA

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania Count...

Significance: The dam and fish ladder were constructed by the CCC, Company 944 in 1935-36. The structure, a concrete arch dam, is believed to be one of the largest power generation plants constructed solely by ... More

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Significance: In 1907, the Patapsco Electric and Manufacturing Company contracted Ambursen Hydraulic Construction Company to build the Bloede Dam using Nils F. Ambursen's patent. The proposed dam would generate... More

Fish ladders and Bonneville Dam, Oregon

Fish ladders and Bonneville Dam, Oregon

Title and other information from caption card. Transfer; United States. Office of War Information. Overseas Picture Division. Washington Division; 1944. More information about the FSA/OWI Collection is availabl... More

Indian ladder, Delaware Water Gap, Pa

Indian ladder, Delaware Water Gap, Pa

Publisher attribution based on provenance. Gottheim collection code: GDWG 1. Forms part of the Larry Gottheim Collection of stereographs and other early photographs (Library of Congress) Purchase; Larry Gotthe... More

Fish ladders and Bonneville Dam, Oregon

Fish ladders and Bonneville Dam, Oregon

Public domain image of an arch structure, bridge, historic place ruins, classical architecture, free to use, no copyright restrictions - Picryl description

Indian ladder Delaware Water Gap, Pennsylvania

Indian ladder Delaware Water Gap, Pennsylvania

Photograph shows a road(?), a fish ladder in the river and landscape, Delaware Water Gap. Publisher attribution based on provenance. Gottheim collection code: GDWG 6. Forms part of the Larry Gottheim Collectio... More

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Significance: In 1907, the Patapsco Electric and Manufacturing Company contracted Ambursen Hydraulic Construction Company to build the Bloede Dam using Nils F. Ambursen's patent. The proposed dam would generate... More

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Significance: In 1907, the Patapsco Electric and Manufacturing Company contracted Ambursen Hydraulic Construction Company to build the Bloede Dam using Nils F. Ambursen's patent. The proposed dam would generate... More

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania County, WA

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania Count...

Significance: The dam and fish ladder were constructed by the CCC, Company 944 in 1935-36. The structure, a concrete arch dam, is believed to be one of the largest power generation plants constructed solely by ... More

Bonneville Dam and fish ladders, Oregon

Bonneville Dam and fish ladders, Oregon

Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Van Arsdale Dam, South Fork of Eel River, Ukiah, Mendocino County, CA

Significance: The Van Arsdale Dam is the oldest combined concrete gravity and earth filled dam in California. This specific type of dam is rare in both California and the United States. Its unusual design mak... More

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Significance: In 1907, the Patapsco Electric and Manufacturing Company contracted Ambursen Hydraulic Construction Company to build the Bloede Dam using Nils F. Ambursen's patent. The proposed dam would generate... More

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Significance: In 1907, the Patapsco Electric and Manufacturing Company contracted Ambursen Hydraulic Construction Company to build the Bloede Dam using Nils F. Ambursen's patent. The proposed dam would generate... More