Water Conservation; Water Erosion; Flooding and Prevention

Photograph of a valve and entrance pipe installed in a dam built as an irrigation reservoir under the Great Plains Conservation Program. OK-1712-3.
Date: March 16, 1962
Creator: Nelson, Paul L.
System: The Gateway to Oklahoma History

Water Conservation; Water Erosion; Flooding and Prevention

Photograph of a drawdown pipe and drain valve in an irrigation resevoir constructed under the Great Plains Conservation Program. OK-1712-2.
Date: March 16, 1962
Creator: Nelson, Paul L.
System: The Gateway to Oklahoma History

Contour Listing Between Terraces for Row Crop Planting

Photograph of a "View of contour listing between terraces for row crop planting."
Date: March 1936
Creator: Slack
System: The Gateway to Oklahoma History