Fostering the Adoption of In Situ Rainwater Harvesting for Food Security in Rwenzori Region, Uganda

2017 ◽  
pp. 323-341
Author(s):  
James W. Kisekka ◽  
Nasser Kinaalwa ◽  
Evelyne Busingye ◽  
Maarten Onneweer
Keyword(s):  
Food Security ◽  
Rainwater Harvesting

Influence of various in situ rainwater harvesting methods on soil moisture and growth of Tamarix ramosissima in the semiarid loess region of China

2006 ◽  
Vol 233 (1) ◽  
pp. 143-148 ◽  
Author(s):  
Xiao-Yan Li ◽  
Pei-Jun Shi ◽  
Yong-Liang Sun ◽  
Jia Tang ◽  
Zhi-Peng Yang
Keyword(s):  
Soil Moisture ◽  
Rainwater Harvesting ◽  
Tamarix Ramosissima ◽  
Loess Region

In-situ treatment of fluoride in a hard rock setting by rooftop rainwater harvesting recharge scehme

2019 ◽  
Author(s):  
P.R Pujari ◽  
C. Padmakar ◽  
R. Quamar ◽  
L. Deshpande ◽  
R. Janipella ◽  
...  
Keyword(s):  
Hard Rock ◽  
Rainwater Harvesting ◽  
Rooftop Rainwater Harvesting

scholarly journals Evaluation of In Situ Rainwater Harvesting as an Adaptation Strategy to Climate Change for Maize Production in Rainfed Africa

2015 ◽  
Vol 29 (13) ◽  
pp. 4803-4816 ◽  
Author(s):  
S. Lebel ◽  
L. Fleskens ◽  
P. M. Forster ◽  
L. S. Jackson ◽  
S. Lorenz
Keyword(s):  
Climate Change ◽  
Rainwater Harvesting ◽  
Adaptation Strategy ◽  
Maize Production

scholarly journals Evaluating models for predicting hydraulic characteristics of layered soils

2012 ◽  
Vol 9 (1) ◽  
pp. 301-336 ◽  
Author(s):  
S. S. W. Mavimbela ◽  
L. D. van Rensburg
Keyword(s):  
Soil Water ◽  
Water Conservation ◽  
Hydraulic Properties ◽  
Rainwater Harvesting ◽  
Characteristic Curve ◽  
Parametric Models ◽  
Distribution Model ◽  
Layered Soils ◽  
In Situ Conditions

Abstract. Soil water characteristic curve (SWCC) and unsaturated hydraulic conductivity (K-coefficient) are critical hydraulic properties governing soil water activity on layered soils. Sustainable soil water conservation would not be possible without accurate knowledge of these hydraulic properties. Infield rainwater harvesting (IRWH) is one conservation technique adopted to improve the soil water regime of a number of clay soils found in the semi arid areas of Free State province of South Africa. Given that SWCC is much easier to measure, most soil water studies rely on SWCC information to predict in-situ K-coefficients. This work validated this practice on the Tukulu, Sepane and Swartland layered soil profiles. The measured SWCC was first described using Brooks and Corey (1964), van Genuchten (1980) and Kasugi (1996) parametric models. The conductivity functions of these models were then required to fit in-situ based K-coefficients derived from instantaneous profile method (IPM). The same K-coefficient was also fitted by HYDRUS 1-D using optimised SWCC parameters. Although all parametric models fitted the measured SWCC fairly well their corresponding conductivity functions could not do the same when fitting the in-situ based K-coefficients. Overestimates of more than 2 orders of magnitude especially at low soil water content (SWC) were observed. This phenomenon was pronounced among the upper horizons that overlaid a clayey horizon. However, optimized α and n parameters using HYDRUS 1-D showed remarkable agreement between fitted and in-situ K-coefficient with root sum of squares error (RMSE) recording values not exceeding unity. During this exercise the Brooks and Corey was replaced by modified van Genuchten model (Vogel and Cislerova, 1988) since it failed to produce unique inverse solutions. The models performance appeared to be soil specific with van Genuchten-Mualem (1980) performing fairly well on the Orthic and neucutanic horizons while its modified form fitted very well the prismatic and pedo-cutanic horizons. The lognormal distribution model of Kasugi (1996) showed an extraordinary good fit among the Swartland profile horizons especially the saprolite rock layer. It was therefore concluded that in-situ KL-coefficient estimates from SWCC parameters could be acceptable if only rough estimates were required. Optimization of parameters for in-situ conditions especially for HYDRUS 1-D carried much prospects in characterising the hydraulic properties of most of the layered soils earmarked for IRWH in the province.

scholarly journals Rainwater Harvesting for Sustainable Agriculture in High Water-Poor Areas in the West Bank, Palestine

Water ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 380 ◽  
Author(s):  
Sameer Shadeed ◽  
Tariq Judeh ◽  
Michel Riksen
Keyword(s):  
Food Security ◽  
Agricultural Development ◽  
Rainwater Harvesting ◽  
West Bank ◽  
High Water ◽  
Agricultural Water ◽  
The West ◽  
Gis Environment ◽  
Total Study Area ◽  
Very High

In most arid regions of the world, the increasing agricultural water supply–demand gap jeopardizes sustainable agricultural development and, as such, undermines local food security. In such situations, unconventional water resource practices such as agricultural rainwater harvesting (ARWH) can be potentially used to tackle agricultural water poverty (AWP). This study aims to integrate AWP and agricultural rainwater harvesting suitability (ARWHS) maps to identify locations where ARWH can be of the most benefit to the West Bank, Palestine. These maps were developed under the GIS environment. The weighted overlay summation process (WOSP), supported by the analytical hierarchy process (AHP), was utilized. Research findings of the AWP map indicate that high to very high AWP covers about 61% of the study area, whereas, the findings of the ARWHS map shows that highly suitable ARWH areas cover 65% of the total study area. Further, 31% of the study area has highly suitable sites for the implementation of proper ARWH techniques. Finally, the combined mapping between the ARWHS map and agricultural lands indicates that high to very high ARWH-suitable areas cover 53% of the rough grazing areas (62% of the entire West Bank area). Thus, the implementation of proper ARWH techniques in such areas is seen to be a sustainable water management option for achieving agricultural sustainability and, accordingly, improved food security in the West Bank, Palestine.

The Deficient Harvesting Rainwater System in Kuala Lumpur and the Human-made Water Pollution Conditions

2017 ◽  
Author(s):  
Jorge Bonasif
Keyword(s):  
Rainwater Harvesting ◽  
Flash Flood ◽  
Drainage System ◽  
River Pollution ◽  
Annual Rainfall ◽  
Secondary Source ◽  
Kuala Lumpur ◽  
Incentive Policies ◽  
The City

Rainwater harvesting is a method to collect water from rain, in forms such as direct from the roof, tanks deposits, ponds or artificial lakes. In the city of Kuala Lumpur (1.7 million inhabitants) the process has in consideration flash flood, river pollution, soil erosion. With an annual rainfall of 2486 mm, and build-up area reaching 1663.23 km2 in 2014 while forest area has suffered reductions of 8.3% in 2014. The paper examines the conditions that exert pressure in the infrastructure of Kuala Lumpur whose center has experienced an increase in the number of violent flooding yet at the same time prevent an effective harvesting of stormwater. The primary methodology used is consultation of the available literature, journals, published reports, interview with experts and survey at impacted neighbourhoods. A secondary source of information is the observation in situ with a sample case, to help to support the validation of the conclusions. The deficiency in the control of the flooding system in a negative correlation to the city’s development. This fact is related to the insufficient drainage system, narrowed stretches in rivers, low prices of water, and the lack of an adequate incentive policies and low volume of information to the population.

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