Productivity of Endangered Least Terns (Sterna antillarum athalassos) below a Hydropower and Flood-Control Facility on the Arkansas River

2000 ◽  
Vol 45 (4) ◽  
pp. 483 ◽  
Author(s):  
David M. Leslie ◽  
G. Keith Wood ◽  
Tracy S. Carter
Keyword(s):  
Flood Control ◽  
Arkansas River ◽  
Sterna Antillarum ◽  
Least Terns ◽  
Control Facility

Ecotourism and Birds in Coastal New Jersey: Contrasting Responses of Birds, Tourists, and Managers

1995 ◽  
Vol 22 (1) ◽  
pp. 56-65 ◽  
Author(s):  
Joanna Burger ◽  
Michael Gochfeld ◽  
Larry J. Niles
Keyword(s):  
New Jersey ◽  
Human Population ◽  
Migratory Birds ◽  
Delaware Bay ◽  
Charadrius Melodus ◽  
Sterna Antillarum ◽  
Least Terns ◽  
Piping Plovers ◽  
Diverse Cultures ◽  
Aesthetic Values

People of diverse cultures appreciate and observe wildlife. With the increase in the importance of economic, social, and aesthetic, values of wildlife comes the responsibility for wise management and use of these resources to ensure biodiversity and the continued wellbeing of the populations. We describe several ways in which ecotourists affect the behaviour, reproductive success, and population levels, of breeding and migratory birds in New Jersey — a heavily industrialized, coastal US state with a dense human population. We use several case-studies to illustrate the effects of ecotourists on birds: heronries, breeding Least Terns (Sterna antillarum), foraging Piping Plovers (Charadrius melodus) during the breeding season, migrant shorebirds and gulls at Caven Point and Delaware Bay, and migrant hawks at Cape May.

scholarly journals Study of the relation between hydraulic jump and the flood water level in the river on the downstream of a spillway

2019 ◽  
Vol 270 ◽  
pp. 04012 ◽  
Author(s):  
Dwiva Anbiya Taruna ◽  
Mohammad Bagus Adityawan ◽  
Joko Nugroho ◽  
Mohammad Farid ◽  
Arno Adi Kuntoro ◽  
...  
Keyword(s):  
Water Level ◽  
Hydraulic Jump ◽  
Flood Control ◽  
Jump Phenomenon ◽  
Design Standards ◽  
Flood Water ◽  
Stilling Basin ◽  
Closed Conduit ◽  
Downstream Area ◽  
Control Facility

Kuningan Dam which is located in Kuningan District, West Java has 21,8 km2 watershed area. This dam also acts as a flood control facility which functions supported by the reservoir’s topography and its spillway building. The spillway building releases excess water from the dam into the downstream area. In the downstream part of the spillway, usually, hydraulic jump phenomenon occurs which depends on the flood water level of the river. The hydraulic jump used in the designing process of stilling basin length. The stilling basin in the spillway building generally designed using Q100. The spillway in Kuningan Dam is designed as a closed conduit channel. In this study, the Kuningan Dam spillway is re-designed as an open channel using ogee type spillway. Based on the modeling result, the length of hydraulic jump that occurs when modeled with the return period discharge of Q25 is 21.54 m, Q50 is 16.65 m, and Q100 is 0.98 m. It is seen that in Q25 the jump was the furthest, so an elaborate study regarding hydraulic jump phenomenon and design standards of the spillway is required.

scholarly journals Effective Height of a Floor Splitter Anti-Vortex Device under Varying Flow Conditions

2016 ◽  
Author(s):  
Hyung-Jun Kim ◽  
Sung Won Park ◽  
Dong Sop Rhee
Keyword(s):  
Flood Control ◽  
Flow Characteristics ◽  
Design Standards ◽  
Effective Height ◽  
Pump Station ◽  
Vertical Location ◽  
Pump Sump ◽  
A Site ◽  
Inflow Conditions ◽  
Control Facility

A pump station is a very important flood control facility for mitigating inundation of urban lowland areas. It is not easy to secure a site to increase the capacity of a pump station in an urban area because of various limitations or to maximize the discharge capacity of the pump sump. Adding a facility to improve the pump capacity of a pump station may affect the flow characteristics, such as unexpected increases in the flow velocity and vorticity, and cause severe problems with operating the pump station. To solve those problems, anti-vortex devices (AVDs) have been developed and adopted for appropriate design standards. The Korean design criteria for AVDs are based on experience and foreign standards because not enough data on the AVD are available. In this study, the flow in the sump was numerically simulated at various AVD heights to collect information on improving the design and efficiency of a pump station. Consequently, an appropriate height for the AVD and changes in the flow pattern and vortex in the pump sump were determined and compared with 12 cases of inflow conditions with respect to the vertical location.

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