HYDROLOGIC MODIFICATION FROM HYDROELECTRIC POWER OPERATIONS IN A MOUNTAIN BASIN

The barani (rain-fed) region accounts for about a fifth of the cultivated area in Pakistan. It has the potential to significantly increase crop production levels. Similarly, considerable scope exists in this area for the development of forests, fruit and vegetable gardening, pasture and stock rearing. Most of the natural resources are also found in this tract. Its hilly areas possess a vast potential for tourism. Besides, significant opportunities exist for irrigation and hydroelectric power generation. An optimum utilisation of all this potential, obviously, is employmentgenerating and income-augmenting. Despite all such realisations this region as a whole, unfortunately, is identified as the least attended to area in terms of provision of socio-physical infrastructure, other development programmes and, even, research work. This led to a deterioration of the employment situation in the barani region as a whole. A poor information base and analysis thereof on employment and manpower related variables is also the consequence of such a treatment to this area. I This paper, using the data of a field survey, tries to fill, though partly, the vacuum on employment and related variables in the rural barani region. An attempt is made here to record and analyse the labour force participation rates, employment pattern (main economic activities) and unemployment/underemployment levels prevailing in the rural baran; areas of the provinces of the Punjab and North-West Frontier Province (NWFP).

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National Hydroelectric Power Resources Study: Volume XVII: Regional Assessment: East Central Area Reliability Coordination Agreement I

10.21236/ada637198 ◽

1981 ◽

Author(s):

ARMY ENGINEER DIV OHIO RIVER CINCINNATI

Keyword(s):

Central Area ◽

Hydroelectric Power ◽

Regional Assessment ◽

East Central ◽

Power Resources

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An Assessment of Environmental Changes in Three Lakes from King's County (Nova Scotia, Canada) Using Diatom-Based Paleolimnological Techniques

Water Quality Research Journal ◽

10.2166/wqrj.2008.012 ◽

2008 ◽

Vol 43 (2-3) ◽

pp. 85-98 ◽

Cited By ~ 10

Author(s):

Joshua R. Thienpont ◽

Brian K. Ginn ◽

Brian F. Cumming ◽

John P. Smol

Keyword(s):

Nova Scotia ◽

Environmental Changes ◽

Sediment Cores ◽

Lake Management ◽

River System ◽

210Pb Dating ◽

Hydroelectric Power ◽

Diatom Assemblages ◽

Shoreline Development ◽

Before And After

Abstract Paleolimnological approaches using sedimentary diatom assemblages were used to assess water quality changes over the last approximately 200 years in three lakes from King's County, Nova Scotia. In particular, the role of recent shoreline development in accelerating eutrophication in these systems was assessed. Sediment cores collected from each lake were analyzed for their diatom assemblages at approximately 5-year intervals, as determined by 210Pb dating. Analyses showed that each system has changed, but tracked different ecosystem changes. Tupper and George lakes recorded shifts, which are likely primarily related to climatic warming, with diatom assemblages changing from a preindustrial dominance by Aulacoseira spp. to present-day dominance by Cyclotella stelligera. In addition to the recent climatic-related changes, further diatom changes in the Tupper Lake core between approximately 1820 and 1970 were coincident with watershed disturbances (farming, forestry, and construction of hydroelectric power infrastructure). Black River Lake has recorded an increase in diatom-inferred total phosphorus since about 1950, likely due to impoundment of the Black River system for hydroelectric generation and subsequent changes in land runoff. Before-and-after (i.e., top-bottom) sediment analyses of six other lakes from King's County provided further evidence that the region is being influenced by climatic change (decreases in Aulacoseira spp., increases in planktonic diatom taxa), as well as showing other environmental stressors (e.g., acidification). However, we recorded no marked increase in diatom-inferred nutrient levels coincident with shoreline cottage development in any of the nine study lakes. Paleolimnological studies such as these allow lake managers to place the current limnological conditions into a long-term context, and thereby provide important background data for effective lake management.

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The simulation model for a flood management by flood control facilities

MATEC Web of Conferences ◽

10.1051/matecconf/201824515002 ◽

2018 ◽

Vol 245 ◽

pp. 15002 ◽

Cited By ~ 28

Author(s):

Roman Davydov ◽

Valery Antonov ◽

Dmitry Molodtsov ◽

Alexey Cheremisin ◽

Vadim Korablev

Keyword(s):

Mathematical Models ◽

Flood Control ◽

Flood Management ◽

Hydroelectric Power Station ◽

Hydroelectric Power ◽

Operating Characteristics ◽

Hydro Power ◽

Operation Modes ◽

Wide Range ◽

Environmental Requirements

The rapid spread of storm floods over large areas requires flood management throughout the river basin by the creation an innovative system of flood control facilities of various functional purposes distributed in the area. The central part of the system is the hydro system with hydro power plant. In addition, the flood control facilities on the side tributaries with self-regulating reservoir are included in the system. To assess the effect of controlling extreme water discharges by flood control facilities, it is necessary to develop special mathematical models reflecting the specifics of their operation. Unified mathematical models of the operation modes of a hydro complex with hydroelectric power station and flood control facility are created. They are implemented in a computer program that provides the ability to determine the main parameters and operating characteristics of hydro systems when performing multivariate calculations in a wide range of initial data. This makes possible specifying the parameters and operation modes of each hydro system with the current economic and environmental requirements, to assess the energy-economic and environmental consequences in the operation of the system of flood control facilities distributed in the area. The article analyses the results of the extreme water discharge’s regulation by the hydro system on the main river and flood control facilities on the side tributaries, considering environmental requirements.

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