scholarly journals Evaluation of Water Supply Stability According to Changes in Instream Flow

2021 ◽  
Vol 21 (6) ◽  
pp. 369-375
Author(s):  
Sijung Choi ◽  
Seongkyu Kang ◽  
Dongryul Lee
Keyword(s):  
Water Supply ◽  
Flow Rate ◽  
Water Budget ◽  
Preliminary Review ◽  
Instream Flow ◽  
Water Resource System ◽  
Related Information ◽  
Budget Analysis ◽  
Seomjin River ◽  
Resource System

The Daap intake plant located downstream of the Seomjin River was relocated in 2005, and the amount of intake increased. Accordingly, it significantly influenced the change in the flow rate downstream of the Seomjin River. After relocating the Daap intake plant, the production of Corbicula in the downstream of the Seomjin River decreased; there is a demand for investigation into the damage to the downstream fishermen and preparation of countermeasures. An increase in instream flow to increase the production of Corbicula downstream of the Seomjin River may cause difficulties in the stable water supply of the Seomjin River basin; therefore, a preliminary review is necessary. In this study, the supply stability was evaluated through water budget analysis after setting several instream flow at the downstream of the Seomjin River in Gurye-gun (Songjeong-ri). In addition, the supply stability of the water resource system in the Seomjin River according to the instream flow rate was evaluated. It was intended to suggest an alternative to the supply of instream flow. If the instream flow is set large to increase the production of Corbicula, it may cause difficulties in supplying instream flow and problems in supplying water necessary for human activities; therefore, related information must be provided through various analyses.

scholarly journals Evaluating joint operation rules for connecting tunnels between two multipurpose dams

2020 ◽  
Vol 51 (3) ◽  
pp. 392-405
Author(s):  
Ji-Woo Jeong ◽  
Young-Oh Kim ◽  
Seung Beom Seo
Keyword(s):  
Water Supply ◽  
Joint Operation ◽  
Water Resource System ◽  
Positive Effects ◽  
Operation Rules ◽  
Operation Rule ◽  
Additional Water ◽  
Hydrologic Uncertainty ◽  
Positive Effect ◽  
Resource System

Abstract This study aims to provide a practically efficient approach for determining the most efficient joint operation rule for two reservoirs connected by a waterway tunnel. For this purpose, the connecting tunnel's effect was assessed and three heuristic joint operation rules accounting for the connecting tunnel were evaluated. A standard operation policy with the connecting tunnel led to positive effects on the water resource system of the target basin with regard to a reliable water supply. The connecting tunnel provides an additional water supply of 12.4 million m3/year to the basin, and the reliability of the two reservoirs increased. Among the three rules, the equivalent reservoir (ER) rule led to the most positive effect on water supply. We found that the ER rule could maximize the positive effects of the connecting tunnel by maintaining the effective water storage rates of the two reservoirs. Moreover, the effects of hydrologic uncertainty on the joint operation rules were discussed using the synthetically generated multiple streamflow traces.

Water Budget Analysis by Using Thornwaite’s TMI Index: A Case Study of India

2011 ◽  
Vol 3 (6) ◽  
pp. 267-269
Author(s):  
P. T. Patil P. T. Patil ◽  
◽  
M. M. Jamadar M. M. Jamadar ◽  
N. A. Jamadar N. A. Jamadar
Keyword(s):  
Water Budget ◽  
Budget Analysis

scholarly journals Inverse streamflow routing

2013 ◽  
Vol 17 (11) ◽  
pp. 4577-4588 ◽  
Author(s):  
M. Pan ◽  
E. F. Wood
Keyword(s):  
Water Budget ◽  
Temporal Dynamics ◽  
Water Cycle ◽  
Ohio River ◽  
Temporal Difference ◽  
Time And Space ◽  
Ohio River Basin ◽  
Budget Analysis ◽  
Spatially Distributed ◽  
Terrestrial Water

Abstract. The process whereby the spatially distributed runoff (generated through saturation/infiltration excesses, subsurface flow, etc.) travels over the hillslope and river network and becomes streamflow is generally referred to as "routing". In short, routing is a runoff-to-streamflow process, and the streamflow in rivers is the response to runoff integrated in both time and space. Here we develop a methodology to invert the routing process, i.e., to derive the spatially distributed runoff from streamflow (e.g., measured at gauge stations) by inverting an arbitrary linear routing model using fixed interval smoothing. We refer to this streamflow-to-runoff process as "inverse routing". Inversion experiments are performed using both synthetically generated and real streamflow measurements over the Ohio River basin. Results show that inverse routing can effectively reproduce the spatial field of runoff and its temporal dynamics from sufficiently dense gauge measurements, and the inversion performance can also be strongly affected by low gauge density and poor data quality. The runoff field is the only component in the terrestrial water budget that cannot be directly measured, and all previous studies used streamflow measurements in its place. Consequently, such studies are limited to scales where the spatial and temporal difference between the two can be ignored. Inverse routing provides a more sophisticated tool than traditional methods to bridge this gap and infer fine-scale (in both time and space) details of runoff from aggregated measurements. Improved handling of this final gap in terrestrial water budget analysis may potentially help us to use space-borne altimetry-based surface water measurements for cross-validating, cross-correcting, and assimilation with other space-borne water cycle observations.

scholarly journals Analysis of drought characteristics for improved understanding of a water resource system

2014 ◽  
Vol 364 ◽  
pp. 404-409 ◽  
Author(s):  
A. T. Lennard ◽  
N. Macdonald ◽  
J. Hooke
Keyword(s):  
Resource Management ◽  
Water Supply ◽  
Water Resource ◽  
Water Resource Management ◽  
Drought Indices ◽  
Drought Severity ◽  
Small Scale ◽  
Water Resource System ◽  
Drought Characteristics ◽  
Standardised Precipitation Index

Abstract. Droughts are a reoccurring feature of the UK climate; recent drought events (2004–2006 and 2010–2012) have highlighted the UK’s continued vulnerability to this hazard. There is a need for further understanding of extreme events, particularly from a water resource perspective. A number of drought indices are available, which can help to improve our understanding of drought characteristics such as frequency, severity and duration. However, at present little of this is applied to water resource management in the water supply sector. Improved understanding of drought characteristics using indices can inform water resource management plans and enhance future drought resilience. This study applies the standardised precipitation index (SPI) to a series of rainfall records (1962–2012) across the water supply region of a single utility provider. Key droughts within this period are analysed to develop an understanding of the meteorological characteristics that lead to, exist during and terminate drought events. The results of this analysis highlight how drought severity and duration can vary across a small-scale water supply region, indicating that the spatial coherence of drought events cannot be assumed.

Water budget analysis

2006 ◽  
pp. 681-687
Author(s):  
Robert A. Muller ◽  
John M. Grymes
Keyword(s):  
Water Budget ◽  
Budget Analysis
Sign in / Sign up

Export Citation Format

Share Document