Techniques of rain water harvesting to increase ground water levels
Lateral shafts with bore wells :- For recharging the upper as well as deeper aquifers lateral shafts of 1.
Ground water harvesting methods
RS and GIS are a very useful technique for groundwater recharge studies. Ramasamy and Anbazhagan identified suitable sites for artificial recharge in Ayyar sub-basin in Cauvery River, India by collecting the data of water-level variation, omphalic, geology and subsurface geology. Different values are to be taking from pumping test analysis. To predict aquifer system response under different environment various scenarios were forecasting Abdulla and Al-Assad Giambelluca et al. Soil depth, permeability, drainage intensity, soil texture and water holding capacity maps were prepared for different confined layers Nagaraju et al. Urbanisation effects on Groundwater Hydrology : Increase in water demand More dependence on ground water use Over exploitation of ground water Increase in run-off, decline in well yields and fall in water levels Reduction in open soil surface area Reduction in infiltration and deterioration in water quality Methods of artificial recharge in urban areas : Water spreading Recharge through pits, trenches, wells, shafts Rooftop collection of rainwater. Groundwater hydrographs were classified into five typical groups by taking water table observation data from the National Groundwater Monitoring Network in Korea. Direct Use: Rainwater can be used directly in water scarce period by construction of sump and collect the roof top rainwater through filter media.
Equations, constants or coefficients of physical properties in the equations and amplitudes of the state are performed by mathematical models Delleur For updating the confined maps, the normalized difference vegetation index NDVI methods were prepared for all integrated and confined maps Peiyue et al.
The results correlated with the results of other recharge estimation methods from the literature.
Urbanisation effects on Groundwater Hydrology : Increase in water demand More dependence on ground water use Over exploitation of ground water Increase in run-off, decline in well yields and fall in water levels Reduction in open soil surface area Reduction in infiltration and deterioration in water quality Methods of artificial recharge in urban areas : Water spreading Recharge through pits, trenches, wells, shafts Rooftop collection of rainwater.
They achieved that rapid urbanization would lead to further lowering of the water table at few locations along the Northern coast of the aquifer system. They explained the model to the Campaspe River Basin in North-Central Victoria, and the results determined that this modeling access can estimate satisfactorily the spatial and temporal distribution of local recharge rates resulting from rainfall and irrigation water.
Adnan determined groundwater recharge modeling using WetSpass model for Gaza strip, Palestine.
Rainwater harvesting and groundwater recharge
They discussed varying the vegetation sunshade parameters for the forest in addition to varying the soil moisture model Finch From the various literature studies, it is understood that one must understand water resources management that how much water is recharging the groundwater aquifers. Chand et al. These are back filled with filter. The overall groundwater recharge and annual utilizable groundwater resources from different sources were measured. In South Africa, Bredenkamp et al. Stored data in the database of hydrogeological data can be used easily for structural queries and following time within different groundwater numerical models Wojda et al. The current decline in groundwater availability in India necessitates the formulation of sustainable groundwater management plan through proper assessment of the available resources. Different hydrogeological characteristics of five river pool were chosen in the database. This is reflected in an increase in watershed development programs, in which RWH is an important structural component. Sibanda et al. Eight sites of Hayatnagar micro-watershed at regular intervals of time were obtained for the soil moisture integrity Sandhu et al. For evaluation of long-term average spatial patterns of absolute evapotranspiration, surface runoff and groundwater recharge, the WetSpass model was developed Adnan
The flow net estimations and modeling methods provided improved estimates for aerial recharge than the alternative methods. Izuka et al. For high volume of groundwater evocation in the study area, the natural recharge is not sufficient Rasoulzadeh and Moosavi The long-term average recharge was a function of the site conditions such as soil, climate, territory and geology.
Storage of rainwater on surface for future use.
based on 84 review