Conservation and improvement of the environment in dam reservoirs

Harada, Joji; Yasuda, Naotoshi

doi:10.1080/07900620310001635629

Cited by 12 publications

(11 citation statements)

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“…Recently, dam reservoir development has drawn criticism from the viewpoints of biological and environmental conservation (Harada and Yasuda, 2004). There are frequent campaigns opposing proposed dams (e.g., Hoyano, 2001), and the removal of existing dams is also debated (e.g., Amano and Igarashi, 2004).…”

Section: Introductionmentioning

confidence: 99%

Water resource management in Japan: Forest management or dam reservoirs?

Komatsu

Kume

Otsuki

2010

Journal of Environmental Management

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Section: Introductionmentioning

confidence: 99%

Water resource management in Japan: Forest management or dam reservoirs?

Komatsu

Kume

Otsuki

2010

Journal of Environmental Management

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“…But lack of appropriate dam sites and opposition to construction of dams makes it difficult to go for large storage structures (Bouwer 2002;Harada and Yasuda 2004;Takahasi 2004). As a result, environment-friendly, smaller structures for water storage are getting more importance.…”

Section: Introductionmentioning

confidence: 99%

Harvesting of seasonal, tidal rivers: a case study

Archana

Mahesha

2012

ISH Journal of Hydraulic Engineering

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The present study reports harvesting of Pavanje River, a seasonal, west-flowing river of Karnataka, as a possible measure to meet the increasing domestic water demand of the basin. The present proposal envisages harvesting of river water through construction of a vented dam at a suitable location. The domestic water demand forecasted for the surrounding villages of the proposed location for the year 2026 is about 4.363 Â 10 À3 Mm 3 /d. Hydrological analysis carried out using river flow data for the period 1971 to 1998 is being utilised to estimate the possible storage. The analysis based on 95% daily dependable flow indicates that the river flow is less than the demand during February 15 to June 6 (i.e. for 115 days). The storage required for this deficit period is about 0.46 Mm 3 . Storage analysis was carried out using the mass curve and sequent peak algorithms. The storage capacity needed to satisfy the demand by the mass curve and the sequent peak methods was estimated to be 0.762 Mm 3 which may be considered as the storage capacity of river water harvesting structure, that is, the vented dam. Also, the storage capacity of the proposed vented dam at the proposed site was estimated using ArcGIS, which was about 0.963 and 1.374 Mm 3 , respectively, for 3 and 4 m heights of the dam. The vented dam at this location also prevents saltwater intrusion into upper reaches during the period November to May. The results obtained from the investigation may lead to such river water storage structures across many tropical, seasonal rivers worldwide to cater to domestic, agricultural and other demands.

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“…In Japan, diverse ecological restoration techniques that are suitable for dams have been actively developed and introduced, and the latest restoration techniques and ecosystem impact mitigation measures attract considerable interest (Harada 2002;Harada and Yasuda 2004). In Korea, the Korea Water Resource Corporation (1997) organized environmentally friendly design guidelines and provided examples of successful construction projects.…”

Section: Introductionmentioning

confidence: 99%

Development of an ecological impact assessment model for dam construction

2016

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The purpose of this study was to develop a model for assessing the ecological value of a dam reservoir. Various evaluable characteristics (''elements'') that influence the ecology of the target area around the dam were grouped into three classes: (1) physical elements, such as altitude, slope, and aspect; (2) vegetation elements, such as forest physiognomy, vegetation type, age class, diameter at breast height (DBH) class, and density; and (3) habitat elements, such as ecological conditions, vegetation conservation classification, and frequency of wildlife appearances. The evaluation standard was quantified considering the ecological function of each element. The developed assessment model was applied to the Yeongju Dam in the Nakdong River basin in Korea. This study assumed that the ecological condition before the dam construction was 100 %. The results of this study showed that the physical, vegetation, and habitat elements were downgraded to 82.8, 95.5, and 90.7 %, respectively, after the construction of the dam. The overall ecological value was estimated to be 90.0 % and thus decreased by 10.0 % due to dam construction. Additionally, by combining the results for the evaluation elements, an ecologically healthy area was selected. The results of this study should prove useful for quantifying ecological impact and for establishing an ecological restoration plan for dam reservoirs.

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Conservation and improvement of the environment in dam reservoirs

Cited by 12 publications

References 1 publication

Water resource management in Japan: Forest management or dam reservoirs?

Water resource management in Japan: Forest management or dam reservoirs?

Harvesting of seasonal, tidal rivers: a case study

Development of an ecological impact assessment model for dam construction

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