scholarly journals GEO-CWB: GIS-Based Algorithms for Parametrising the Responses of Catchment Dynamic Water Balance Regarding Climate and Land Use Changes

Hydrology ◽  
2020 ◽  
Vol 7 (3) ◽  
pp. 39 ◽  
Author(s):  
Salem S. Gharbia ◽  
Laurence Gill ◽  
Paul Johnston ◽  
Francesco Pilla
Keyword(s):  
Land Use ◽  
Water Balance ◽  
Land Use Changes ◽  
Critical Factor ◽  
Balance Model ◽  
Spatial And Temporal Patterns ◽  
Catchment Scale ◽  
Water Balance Components ◽  
Spatially Distributed ◽  
Hydrological System

Parametrising the spatially distributed dynamic catchment water balance is a critical factor in studying the hydrological system responses to climate and land use changes. This study presents the development of a geographic information system (GIS)-based set of algorithms (geographical spatially distributed water balance model (GEO-CWB)), which is developed from integrating physical, statistical, and machine learning models. The GEO-CWB tool has been developed to simulate and predict future spatially distributed dynamic water balance using GIS environment at the catchment scale in response to the future changes in climate variables and land use through a user-friendly interface. The tool helps in bridging the gap in quantifying the high-resolution dynamic water balance components for the large catchments by reducing the computational costs. Also, this paper presents the application and validation of GEO-CWB on the Shannon catchment in Ireland as an example of a large and complicated hydrological system. It can be concluded that climate and land use changes have significant effects on the spatial and temporal patterns of the different water balance components of the catchment.

scholarly journals Forecasting land-use change and its impact on the groundwater system of the Kleine Nete catchment, Belgium

2007 ◽  
Vol 4 (6) ◽  
pp. 4265-4295 ◽  
Author(s):  
J. Dams ◽  
S. T. Woldeamlak ◽  
O. Batelaan
Keyword(s):  
Climate Change ◽  
Land Use ◽  
Land Use Change ◽  
Water Balance ◽  
Groundwater Level ◽  
Balance Model ◽  
Groundwater Model ◽  
Water Balance Components ◽  
Groundwater System ◽  
The Impact

Abstract. Land-use change and climate change, along with groundwater pumping are frequently indicated to be the main human-induced factors influencing the groundwater system. Up till now, research has mainly been focusing on the effect of the water quality of these human-induced changes on the groundwater system, often neglecting changes in quantity. The focus in this study is on the impact of land-use changes in the near future, from 2000 until 2020, on the groundwater quantity and the general hydrologic balance of a sub-catchment of the Kleine Nete, Belgium. This study tests a new methodology which involves coupling a land-use change model with a water balance model and a groundwater model. The future land-use is modelled with the CLUE-S model. Four scenarios (A1, A2, B1 and B2) based on the Special Report on Emission Scenarios (SRES) are used for the land-use modelling. Water balance components, groundwater level and baseflow are simulated using the WetSpass model in conjunction with a MODFLOW groundwater model. Results show that the average recharge slowly decreases for all scenarios, the decreases are 2.9, 1.6, 1.8 and 0.8% for respectively scenario A1, A2, B1 and B2. The predicted reduction in recharge results in a small decrease of the average groundwater level, ranging from 2.5 cm for scenario A1 to 0.9 cm for scenario B2, and a reduction of the total baseflow with maximum 2.3% and minimum 0.7% respectively for scenario A1 and B2. Although these average values do not indicate significant changes for the groundwater system, spatial analysis of the changes shows the changes are concentrated in the neighbourhood of the major cities in the study areas. It is therefore important for spatial managers to take the groundwater system into account for reducing the negative impacts of land-use and climate change as much as possible.

scholarly journals Impacts of Land use Changes Scenarios on Water Balance Components using WetSpa Model (Case Study: Ziarat Watershed of Golestan Province)

2018 ◽  
Vol 9 (17) ◽  
pp. 168-181
Author(s):  
narges javidan ◽  
Abdolgreza Bahremand ◽  
rana javidan ◽  
Majid Onagh ◽  
Chooghi Bayram Komaki ◽  
...  
Keyword(s):  
Land Use ◽  
Water Balance ◽  
Land Use Changes ◽  
Water Balance Components ◽  
Model Case ◽  
Wetspa Model ◽  
Golestan Province

Estimation of Spatial and Temporal Groundwater Balance Components in Khadir Canal Sub-Division, Chaj Doab, Pakistan

Hydrology ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 178
Author(s):  
Muhammad Aslam ◽  
Ali Salem ◽  
Vijay P. Singh ◽  
Muhammad Arshad
Keyword(s):  
Land Use ◽  
Water Balance ◽  
Groundwater Recharge ◽  
Groundwater Resources ◽  
Balance Model ◽  
Annual Rainfall ◽  
Water Balance Components ◽  
Aquifer Management ◽  
Groundwater Balance ◽  
Semi Arid

Evaluation of the spatial and temporal distribution of water balance components is required for efficient and sustainable management of groundwater resources, especially in semi-arid and data-poor areas. The Khadir canal sub-division, Chaj Doab, Pakistan, is a semi-arid area which has shallow aquifers which are being pumped by a plethora of wells with no effective monitoring. This study employed a monthly water balance model (water and energy transfer among soil, plants, and atmosphere)—WetSpass-M—to determine the groundwater balance components on annual, seasonal, and monthly time scales for a period of the last 20 years (2000–2019) in the Khadir canal sub-division. The spatial distribution of water balance components depends on soil texture, land use, groundwater level, slope, and meteorological conditions. Inputs for the model included data on topography, slope, soil, groundwater depth, slope, land use, and meteorological data (e.g., precipitation, air temperature, potential evapotranspiration, and wind speed) which were prepared using ArcGIS. The long-term average annual rainfall (455.7 mm) is distributed as 231 mm (51%) evapotranspiration, 109.1 mm (24%) surface runoff, and 115.6 mm (25%) groundwater recharge. About 51% of groundwater recharge occurs in summer, 18% in autumn, 14% in winter, and 17% in spring. Results showed that the WetSpass-M model properly simulated the water balance components of the Khadir canal sub-division. The WetSpass-M model’s findings can be used to develop a regional groundwater model for simulation of different aquifer management scenarios in the Khadir area, Pakistan.

scholarly journals Inferring Soil Moisture Memory from Streamflow Observations Using a Simple Water Balance Model

2013 ◽  
Vol 14 (6) ◽  
pp. 1773-1790 ◽  
Author(s):  
Rene Orth ◽  
Randal D. Koster ◽  
Sonia I. Seneviratne
Keyword(s):  
Soil Moisture ◽  
Water Balance ◽  
Weather Forecasting ◽  
Water Balance Model ◽  
Balance Model ◽  
Catchment Scale ◽  
Spatially Distributed ◽  
Optimized Model ◽  
Streamflow Data

Abstract Soil moisture is known for its integrative behavior and resulting memory characteristics. Soil moisture anomalies can persist for weeks or even months into the future, making initial soil moisture a potentially important contributor to skill in weather forecasting. A major difficulty when investigating soil moisture and its memory using observations is the sparse availability of long-term measurements and their limited spatial representativeness. In contrast, there is an abundance of long-term streamflow measurements for catchments of various sizes across the world. The authors investigate in this study whether such streamflow measurements can be used to infer and characterize soil moisture memory in respective catchments. Their approach uses a simple water balance model in which evapotranspiration and runoff ratios are expressed as simple functions of soil moisture; optimized functions for the model are determined using streamflow observations, and the optimized model in turn provides information on soil moisture memory on the catchment scale. The validity of the approach is demonstrated with data from three heavily monitored catchments. The approach is then applied to streamflow data in several small catchments across Switzerland to obtain a spatially distributed description of soil moisture memory and to show how memory varies, for example, with altitude and topography.

scholarly journals Application and Verification of a Water Balance Model With Distributed Parameters (On the Example of Rega River Basin)

2004 ◽  
Vol 11 (1) ◽  
pp. 139-149
Author(s):  
Paulina Pokojska
Keyword(s):  
Water Balance ◽  
Land Use Changes ◽  
Measurement Data ◽  
Underground Water ◽  
Balance Model ◽  
Evaporation Surface ◽  
Structure Of Water ◽  
Distributed Parameters ◽  
Raster Maps ◽  
Spatially Distributed

Abstract The purpose of the study reported was to apply and verify a model of water balance of spatially distributed parameters in a meso-scale river catchment. The model was applied in the basin of Rega river, with the use of meteorological and hydrological measurement data from the years 1956–1995. In modelling, due account was taken of the land use changes having occurred during the 40-year period considered. The output from modelling was constituted by the raster maps of area evaporation, surface runoff and supply of the underground water resources. On the basis of these results the magnitude of outflow and the structure of water balance were calculated for three river gauge profiles. The deviations of the model-based calculated outflow values from the measured ones were maximally equal +10% for the entire 40-year period and +20% in one of the 5-year sub-periods.

scholarly journals An assessment of land use change impacts on the water resources of the Mula and Mutha Rivers catchment upstream of Pune, India

2013 ◽  
Vol 17 (6) ◽  
pp. 2233-2246 ◽  
Author(s):  
P. D. Wagner ◽  
S. Kumar ◽  
K. Schneider
Keyword(s):  
Land Use ◽  
Water Resources ◽  
Land Use Change ◽  
Water Balance ◽  
Assessment Tool ◽  
Land Use Changes ◽  
Hydrologic Model ◽  
Water Yield ◽  
Catchment Scale ◽  
Basin Scale

Abstract. Land use changes are altering the hydrologic system and have potentially large impacts on water resources. Rapid socio-economic development drives land use change. This is particularly true in the case of the rapidly developing city of Pune, India. The present study aims at analyzing past land use changes between 1989 and 2009 and their impacts on the water balance in the Mula and Mutha Rivers catchment upstream of Pune. Land use changes were identified from three Rivers catchment multitemporal land use classifications for the cropping years 1989/1990, 2000/2001, and 2009/2010. The hydrologic model SWAT (Soil and Water Assessment Tool) was used to assess impacts on runoff and evapotranspiration. Two model runs were performed and compared using the land use classifications of 1989/1990 and 2009/2010. The main land use changes were identified as an increase of urban area from 5.1% to 10.1% and cropland from 9.7% to 13.5% of the catchment area during the 20 yr period. Urbanization was mainly observed in the eastern part and conversion to cropland in the mid-northern part of the catchment. At the catchment scale we found that the impacts of these land use changes on the water balance cancel each other out. However, at the sub-basin scale urbanization led to an increase of the water yield by up to 7.6%, and a similar decrease of evapotranspiration, whereas the increase of cropland resulted in an increase of evapotranspiration by up to 5.9%.

scholarly journals An assessment of land use change impacts on the water resources of the Mula and Mutha Rivers catchment upstream of Pune, India

2013 ◽  
Vol 10 (2) ◽  
pp. 1943-1985 ◽  
Author(s):  
P. D. Wagner ◽  
S. Kumar ◽  
K. Schneider
Keyword(s):  
Land Use ◽  
Water Resources ◽  
Land Use Change ◽  
Water Balance ◽  
Assessment Tool ◽  
Land Use Changes ◽  
Hydrologic Model ◽  
Water Yield ◽  
Catchment Scale ◽  
Basin Scale

Abstract. Land use changes are altering the hydrologic system and have potentially large impacts on water resources. Rapid socio-economic development drives land use change. This is particularly true in the case of the rapidly developing city of Pune, India. The present study aims at analyzing past land use changes between 1989 and 2009 and their impacts on the water balance in the Mula and Mutha Rivers catchment upstream of Pune. Land use changes were identified from three multitemporal land use classifications for the cropping years 1989/1990, 2000/2001, and 2009/2010. The hydrologic model SWAT (Soil and Water Assessment Tool) was used to assess impacts on runoff and evapotranspiration. Two model runs were performed and compared using the land use classifications of 1989/1990 and 2009/2010. The main land use changes were identified as an increase of urban area from 5.1% to 10.1% and cropland from 9.7% to 13.5% of the catchment area during the 20 yr period. Urbanization was mainly observed in the eastern part and conversion to cropland in the mid-northern part of the catchment. At the catchment scale we found that the impacts of these land use changes on the water balance cancel each other. However, at the sub-basin scale urbanization led to an increase of the water yield by up to 7.6%, and a similar decrease of evapotranspiration, whereas the increase of cropland resulted in an increase of evapotranspiration by up to 5.9%.

scholarly journals Mudanças no Uso da Terra e Efeito nos Componentes do Balanço Hídrico no Agreste Pernambucano

2020 ◽  
Vol 13 (2) ◽  
pp. 870
Author(s):  
Thyago Rodrigues do Carmo Brito ◽  
José Romualdo De Sousa Lima ◽  
Cássio Lopes de Oliveira ◽  
Rodolfo Marcondes Silva Souza ◽  
Antonio Celso Dantas Antonino ◽  
...  
Keyword(s):  
Land Use ◽  
Water Balance ◽  
Soil Water ◽  
Capillary Rise ◽  
Land Use Changes ◽  
Water Storage ◽  
Soil Water Storage ◽  
Water Balance Components ◽  
Water Losses ◽  
Regional Land

As mudanças no uso da terra podem provocar alterações no regime hídrico de várias regiões do mundo. Na região agreste de Pernambuco, essas mudanças consistem, principalmente, na retirada da Caatinga para a implantação de pastagens e culturas agrícolas. Contudo, pouco se sabe sobre o efeito dessas mudanças nos componentes do balanço hídrico. Desse modo, o objetivo do presente trabalho foi avaliar o efeito da conversão de áreas de Caatinga em áreas de pastagem nos componentes do balanço hídrico. Para isso, foram medidos, simultaneamente, o armazenamento de água no solo, os fluxos de água (drenagem e/ou ascensão capilar), o escoamento superficial e a evapotranspiração (ET) durante o período de 24 meses (outubro de 2013 a setembro de 2015), pela metodologia do balanço hídrico no solo, em áreas de Caatinga e de pastagem no município de São João-PE. Verificou-se que o armazenamento de água no solo na Caatinga foi menor que na pastagem, devido ao maior dossel e sistema radicular da Caatinga. As perdas de água por drenagem totalizaram -103,9 mm na pastagem e foram nulas na Caatinga. Em ambas as áreas a ET foi proporcional a precipitação pluvial. totalizando 1.195,6 mm com média de 1,64 mm d-1 na Caatinga e na pastagem totalizou 1.087,4 mm e 1,49 mm d-1. Conclui-se que as mudanças no uso da terra (retirada da Caatinga e implantação de pastagem) resultaram em aumento das perdas de água por drenagem e redução da evapotranspiração, que pode causar impacto no clima regional. Land Use Changes and Effects on the Water Balance Components in Agreste Pernambucano A B S T R A C TLand use changes can cause alterations in water regime in various regions of the world. In the Agreste region of Pernambuco, these changes consist mainly of the removal of Caatinga for the implantation of grassland and crops. However, little is known about the effect of these changes on water balance components. Thus, the objective of the present study was to evaluate the effect of the conversion of Caatinga areas into grassland in the water balance components. For this, we measured simultaneously the soil water storage, water fluxes (drainage and / or capillary rise), runoff and evapotranspiration (ET) over a 24-month period (October 2013 to September 2015), by the soil water balance method in Caatinga and grassland areas in São João-PE. It was found that the soil water storage in Caatinga was lower than in the grassland, due to the higher canopy and root system of the Caatinga. Water losses, via drainage, totaled -103.9 mm in the grassland and were zero in the Caatinga. In both areas, ET was proportional to rainfall, totaling 1,195.6 mm with an average of 1.64 mm d-1 in the Caatinga and in the grassland totaled 1,087.4 mm and 1.49 mm d-1. It concludes that land use changes (i.e., the conversion of Caatinga areas into grassland) resulted in increased losses of drainage and reduced evapotranspiration, which can impact on regional climate.Key words: Caatinga; grassland; evapotranspiration; soil water content.

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