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• 1. [Image] Potatoes on irrigation and soil temperature experiments

  	881 Klamath; Oregon Experiment Station; Will Blackman's farm; Nematode control; August 10, [1939?]
  	Citation × Citation Citation Abstract Copy Title: Potatoes on irrigation and soil temperature experiments Author: United States. Bureau of Reclamation Year: 1939, 2006, 2005 881 Klamath; Oregon Experiment Station; Will Blackman's farm; Nematode control; August 10, [1939?] Title: Potatoes on irrigation and soil temperature experiments Author: United States. Bureau of Reclamation Year: 1939, 2006, 2005 881 Klamath; Oregon Experiment Station; Will Blackman's farm; Nematode control; August 10, [1939?] Close

• 2. [Image] Stacking hay on Liskey Brothers' Poe Valley ranch

  	KP-1224-R2 - Klamath Project. Region II. Using crane with 74' boom to build stacks containing about 200 tons of hay; August 2, 1946; Photo by R. S. Hopkins
  	Citation × Citation Citation Abstract Copy Title: Stacking hay on Liskey Brothers' Poe Valley ranch Author: United States. Bureau of Reclamation, Hopkins, R.S. Year: 1946, 2006, 2005 KP-1224-R2 - Klamath Project. Region II. Using crane with 74' boom to build stacks containing about 200 tons of hay; August 2, 1946; Photo by R. S. Hopkins Title: Stacking hay on Liskey Brothers' Poe Valley ranch Author: United States. Bureau of Reclamation, Hopkins, R.S. Year: 1946, 2006, 2005 KP-1224-R2 - Klamath Project. Region II. Using crane with 74' boom to build stacks containing about 200 tons of hay; August 2, 1946; Photo by R. S. Hopkins Close

• 3. [Image] Stacking hay on Liskey Brothers' Poe Valley ranch

  	KP-1225-R2 - Klamath Project. Region II. Using crane with 74' boom to build stacks containing about 200 tons of hay; August 2, 1946; Photo by R. S. Hopkins
  	Citation × Citation Citation Abstract Copy Title: Stacking hay on Liskey Brothers' Poe Valley ranch Author: United States. Bureau of Reclamation, Hopkins, R.S. Year: 1946, 2006, 2005 KP-1225-R2 - Klamath Project. Region II. Using crane with 74' boom to build stacks containing about 200 tons of hay; August 2, 1946; Photo by R. S. Hopkins Title: Stacking hay on Liskey Brothers' Poe Valley ranch Author: United States. Bureau of Reclamation, Hopkins, R.S. Year: 1946, 2006, 2005 KP-1225-R2 - Klamath Project. Region II. Using crane with 74' boom to build stacks containing about 200 tons of hay; August 2, 1946; Photo by R. S. Hopkins Close

• 4. [Image] Flax on experimental farm, County - State and BR

  	875 Klamath; August 10, [1939?]
  	Citation × Citation Citation Abstract Copy Title: Flax on experimental farm, County - State and BR Author: United States. Bureau of Reclamation Year: 1939, 2006, 2005 875 Klamath; August 10, [1939?] Title: Flax on experimental farm, County - State and BR Author: United States. Bureau of Reclamation Year: 1939, 2006, 2005 875 Klamath; August 10, [1939?] Close

• 5. [Image] Lower Klamath Lake - Viewed from north of Oregon-California border

  	KP-2283 - Klamath Project--Lower Klamath Lake. Viewed from just north of Oregon-California border showing agricultural lands share-cropped for Fish and Wildlife Service at near left, the Wildlife Refuge ...
  	Citation × Citation Citation Abstract Copy Title: Lower Klamath Lake - Viewed from north of Oregon-California border Author: United States. Bureau of Reclamation, Horn, Tom Year: 1956, 2007, 2006 KP-2283 - Klamath Project--Lower Klamath Lake. Viewed from just north of Oregon-California border showing agricultural lands share-cropped for Fish and Wildlife Service at near left, the Wildlife Refuge Sump 3 at near right, and other sumps in background; April 12, 1956; Photo by Tom Horn Title: Lower Klamath Lake - Viewed from north of Oregon-California border Author: United States. Bureau of Reclamation, Horn, Tom Year: 1956, 2007, 2006 KP-2283 - Klamath Project--Lower Klamath Lake. Viewed from just north of Oregon-California border showing agricultural lands share-cropped for Fish and Wildlife Service at near left, the Wildlife Refuge Sump 3 at near right, and other sumps in background; April 12, 1956; Photo by Tom Horn Close

• 6. [Image] Klamath Project - Varieties of flax grown at the Klamath Experimental Station

  	KP-1592 - Klamath Project. Corner of experimental planting of flax varieties grown at the Klamath Experimental Station conducted by the State of Oregon near Klamath Falls, Oregon; September 4, 1947; Photo ...
  	Citation × Citation Citation Abstract Copy Title: Klamath Project - Varieties of flax grown at the Klamath Experimental Station Author: United States. Bureau of Reclamation, Harvey, A.D. Year: 1947, 2006, 2005 KP-1592 - Klamath Project. Corner of experimental planting of flax varieties grown at the Klamath Experimental Station conducted by the State of Oregon near Klamath Falls, Oregon; September 4, 1947; Photo by A. D. Harvey Title: Klamath Project - Varieties of flax grown at the Klamath Experimental Station Author: United States. Bureau of Reclamation, Harvey, A.D. Year: 1947, 2006, 2005 KP-1592 - Klamath Project. Corner of experimental planting of flax varieties grown at the Klamath Experimental Station conducted by the State of Oregon near Klamath Falls, Oregon; September 4, 1947; Photo by A. D. Harvey Close

• 7. [Image] Horse power used to pull a cultivating machine on a potato farm near Olene, Oregon

  	KP-1209-R2 - Klamath Project. Region II. Although tractors are used extensively in the Klamath Project, occasionally one sees horse power utilized to pull a cultivating machine. This picture of a potato ...
  	Citation × Citation Citation Abstract Copy Title: Horse power used to pull a cultivating machine on a potato farm near Olene, Oregon Author: United States. Bureau of Reclamation, Fluharty, J.E. Year: 1946, 2006, 2005 KP-1209-R2 - Klamath Project. Region II. Although tractors are used extensively in the Klamath Project, occasionally one sees horse power utilized to pull a cultivating machine. This picture of a potato patch was made near Olene, Oregon; June 26, 1946; Photo by J. E. Fluharty Title: Horse power used to pull a cultivating machine on a potato farm near Olene, Oregon Author: United States. Bureau of Reclamation, Fluharty, J.E. Year: 1946, 2006, 2005 KP-1209-R2 - Klamath Project. Region II. Although tractors are used extensively in the Klamath Project, occasionally one sees horse power utilized to pull a cultivating machine. This picture of a potato patch was made near Olene, Oregon; June 26, 1946; Photo by J. E. Fluharty Close

• 8. [Image] Roy Schmiser on his cultivator in a potato patch on his homestead near Olene, Oregon

  	KP-1210-R2 Klamath Project. Region II. Roy Schmiser is pictured on his cultivator in a potato patch on his homestead near Olene, Oregon. Fifteen years ago he homesteaded 132 acres of land and in that ...
  	Citation × Citation Citation Abstract Copy Title: Roy Schmiser on his cultivator in a potato patch on his homestead near Olene, Oregon Author: United States. Bureau of Reclamation, Fluharty, J.E. Year: 1946, 2006, 2005 KP-1210-R2 Klamath Project. Region II. Roy Schmiser is pictured on his cultivator in a potato patch on his homestead near Olene, Oregon. Fifteen years ago he homesteaded 132 acres of land and in that time he has kept most of it in pasture, but he does have some small areas planted to potatoes; June 26, 1946; Photo by J. E. Fluharty Title: Roy Schmiser on his cultivator in a potato patch on his homestead near Olene, Oregon Author: United States. Bureau of Reclamation, Fluharty, J.E. Year: 1946, 2006, 2005 KP-1210-R2 Klamath Project. Region II. Roy Schmiser is pictured on his cultivator in a potato patch on his homestead near Olene, Oregon. Fifteen years ago he homesteaded 132 acres of land and in that time he has kept most of it in pasture, but he does have some small areas planted to potatoes; June 26, 1946; Photo by J. E. Fluharty Close

• 9. [Image] Klamath Project. Agriculture. Pile of sugar beets at railroad siding near Tulelake, California

  	KP-1586-R2 - Klamath Project. Agriculture. These beets, recently harvested, will be sent to the Spreckles sugar plant at Woodland, California, for processing; October 15, 1947; Photo by J. E. Fluhart...
  	Citation × Citation Citation Abstract Copy Title: Klamath Project. Agriculture. Pile of sugar beets at railroad siding near Tulelake, California Author: United States. Bureau of Reclamation, Fluharty, J.E. Year: 1947, 2006, 2005 KP-1586-R2 - Klamath Project. Agriculture. These beets, recently harvested, will be sent to the Spreckles sugar plant at Woodland, California, for processing; October 15, 1947; Photo by J. E. Fluharty Title: Klamath Project. Agriculture. Pile of sugar beets at railroad siding near Tulelake, California Author: United States. Bureau of Reclamation, Fluharty, J.E. Year: 1947, 2006, 2005 KP-1586-R2 - Klamath Project. Agriculture. These beets, recently harvested, will be sent to the Spreckles sugar plant at Woodland, California, for processing; October 15, 1947; Photo by J. E. Fluharty Close

• 10. [Image] Recent paleolimnology of Upper Klamath Lake, Oregon

  	Recent Paleolimnology of Upper Klamath Lake Eilers et al. 2001 ABSTRACT Sediment cores were collected from Upper Klamath Lake in October, 1998 and analyzed for 210Pb, 14C, 15N, N, P, C, Ti, Al, diatoms, ...
  	Citation × Citation Citation Abstract Copy Title: Recent paleolimnology of Upper Klamath Lake, Oregon Author: United States. Bureau of Reclamation Year: 2001, 2005 Recent Paleolimnology of Upper Klamath Lake Eilers et al. 2001 ABSTRACT Sediment cores were collected from Upper Klamath Lake in October, 1998 and analyzed for 210Pb, 14C, 15N, N, P, C, Ti, Al, diatoms, Pediastrum, and cyanobacterial akinetes. These results were used to reconstruct changes in water quality in Upper Klamath Lake over the last 150 years. The results showed that there was substantial mixing of the upper 10 cm of sediment, representing the previous 20 to 30 years. However, below that, 210Pb activity declined monotonically, allowing reasonable dating for the period from about 1850 to 1970. The sediment accumulation rates (SAR) showed a substantial increase in the 20th century. The increase in SAR corresponded with increases in erosional input from the watershed as represented by the increases in sediment concentrations of Ti and Al. The upper 20 cm of sediment (representing the last 150 years) also showed increases in C, N, P, and 15N. The increases in nutrient concentrations may be affected to various degrees by diagenetic reactions within the sediments, although the changes in concentrations also were marked by changes in the N:P ratio and in a qualitative change in the source of N as reflected in increasing S15N. The diatoms showed modest changes, particularly in the upper sediments, with increases in Asterionellaformosa, Stephanodiscus hantzschii, and S. parvus. Pediastrum, a green alga, was well-preserved in the sediments and exhibited a sharp decline in relative abundance in the upper sediments. Total cyanobacteria, as represented by preserved akinetes, exhibited only minor changes in the last 1000 years. However, a taxon which was formerly not present in the lake 150 years ago, Aphanizomenon, has shown major increases in recent decades. Although the mixing in the upper sediments prevents high-resolution temporal analysis of the recent history (e.g. last 30 years) of Upper Klamath Lake, the results demonstrate that major changes in water quality likely have occurred leading to a major modification of the phytoplankton assemblage. The changes in sediment composition are consistent with land use activities during this period that include substantial deforestation, drainage of wetlands, and agricultural activities associated with livestock and irrigated cropland. Title: Recent paleolimnology of Upper Klamath Lake, Oregon Author: United States. Bureau of Reclamation Year: 2001, 2005 Recent Paleolimnology of Upper Klamath Lake Eilers et al. 2001 ABSTRACT Sediment cores were collected from Upper Klamath Lake in October, 1998 and analyzed for 210Pb, 14C, 15N, N, P, C, Ti, Al, diatoms, Pediastrum, and cyanobacterial akinetes. These results were used to reconstruct changes in water quality in Upper Klamath Lake over the last 150 years. The results showed that there was substantial mixing of the upper 10 cm of sediment, representing the previous 20 to 30 years. However, below that, 210Pb activity declined monotonically, allowing reasonable dating for the period from about 1850 to 1970. The sediment accumulation rates (SAR) showed a substantial increase in the 20th century. The increase in SAR corresponded with increases in erosional input from the watershed as represented by the increases in sediment concentrations of Ti and Al. The upper 20 cm of sediment (representing the last 150 years) also showed increases in C, N, P, and 15N. The increases in nutrient concentrations may be affected to various degrees by diagenetic reactions within the sediments, although the changes in concentrations also were marked by changes in the N:P ratio and in a qualitative change in the source of N as reflected in increasing S15N. The diatoms showed modest changes, particularly in the upper sediments, with increases in Asterionellaformosa, Stephanodiscus hantzschii, and S. parvus. Pediastrum, a green alga, was well-preserved in the sediments and exhibited a sharp decline in relative abundance in the upper sediments. Total cyanobacteria, as represented by preserved akinetes, exhibited only minor changes in the last 1000 years. However, a taxon which was formerly not present in the lake 150 years ago, Aphanizomenon, has shown major increases in recent decades. Although the mixing in the upper sediments prevents high-resolution temporal analysis of the recent history (e.g. last 30 years) of Upper Klamath Lake, the results demonstrate that major changes in water quality likely have occurred leading to a major modification of the phytoplankton assemblage. The changes in sediment composition are consistent with land use activities during this period that include substantial deforestation, drainage of wetlands, and agricultural activities associated with livestock and irrigated cropland. Close