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5779
 

 SONAR, historical and aerial photographs, and vibracoring were used to assess the type and thickness distribution of sediments impounded by Gold Ray Dam on the Rogue River in southern Oregon. From these data, a volume of about 400,000 cubic yards (

Equation EG13006eq1

) of sediment was determined for the inundated area of the reservoir.

Overall, sediment volumes in the impounded part of the reservoir were less than expected. There are three possibilities that may explain the perceived absence of sediment: (1) the gradient of the Rogue River in this stretch is less, and therefore sediment yields are less; (2) the extraction of gravels and/or other impediments upstream decreased the availability of sediments delivered into the reservoir; and/or (3) sediment was deposited by a prograding delta that filled in the inundated area of the floodplain upstream from Gold Ray Dam. The amount of sediment deposited on this inundated floodplain may have been as much as 1,800,000 cubic yards (Equation EG13006eq2), bringing the total amount of sediment impounded by Gold Ray Dam to Equation EG13006eq3 yards (Equation EG13006eq4).

Applied sedimentology is not only vital to developing a depositional model for the filling of a reservoir, but also providing insights into depositional and erosional changes that will occur upon the removal of a dam. In particular, the processes of delta formation, reoccupation of abandoned channels, and avulsion are paramount in determining sediment accumulation and distribution in reservoirs.

12376
 
Energy Policy Blog

Witnesses stated that BLM policies create unnecessary obstacles to oil and gas activities on federal lands at a recent House Natural Resources, Energy and Mineral Resources subcommittee hearing: “Energy in America: BLM’s Red-Tape Run Around and its Impact on American Energy Production”

12374
 
Energy Policy Blog

We also export and import automobiles and many other products. This market movement helps get the desired type of car--or oil--to the consumer. But many consider oil to be more critical to our national security.

3803
 
Explorer Policy Watch

Oil and natural gas production continued to grow in the United States in 2013 even as progress on new federal laws and regulations stalled – but local opposition to shale gas and oil development increased.

3792
 
Explorer Emphasis Article

Oil spills are a potential challenge in any corner of the world, but the Arctic brings its own set of challenges to oil production and transportation, and so it needs its own dedicated technologies for meeting them.

3786
 
Explorer Article

The Indian state of West Bengal, located in eastern India and stretching from the Himalayas to the Bay of Bengal, is a cultural hub where art and literacy flourished. This landscape is dominated by winding rivers and luscious fields of spices, rice and other crops. The Bengal Basin region, however, is confronted with some of the highest levels of naturally occurring arsenic (As) in drinking water, which poses a major health-related environmental threat to the 70-100 million people living in the area.

3785
 
Explorer Article

Energy is required to secure, treat and distribute water; conversely, energy production depends on an abundant and reliable source of water.

5776
 

The origin of thermogenic natural gas in the shallow stratigraphy of northeastern Pennsylvania is associated, in part, with interbedded coal identified in numerous outcrops of the Upper Devonian Catskill and Lock Haven Formations. Historically documented and newly identified locations of Upper Devonian coal stringers are shown to be widespread, both laterally across the region and vertically throughout the stratigraphic section of the Catskill and Lock Haven Formations. Coal samples exhibited considerable gas source potential with total organic carbon as high as 44.40% by weight, with a mean of 13.66% for 23 sample locations analyzed. Upper Devonian coal is thermogenically mature; calculated vitrinite reflectances range from 1.25% to 2.89%, with most samples falling within the dry-gas window. Source potential is further supported by gas shows observed while drilling through shallow, identifiable coal horizons, which are at times located within fresh groundwater aquifers. Thermogenic gas detected in area water wells during predrill baseline sampling is determined not only to be naturally occurring, but also common in the region.

12372
 
Energy Policy Blog

Not oil, not shale, but a huge resource! Industry interest in developing oil shale production technology rises and falls with oil prices and the availability of cheaper options. Shale oil in formations like the Bakken is currently more economically attractive and less risky. Chevron, Shell and Exxon-Mobil have ended their oil shale projects in the past year, but Red Leaf Resources is moving ahead.

3104
 

Production from the Marcellus gas shale generated international interest when methane accumulated in the surface housing of a water well pump and exploded.

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