Table 7 Specifications for the structures.

From: Delineation of suitable sites for groundwater recharge based on groundwater potential with RS, GIS, and AHP approach for Mand catchment of Mahanadi Basin

Type of structure

Applications

Required site condition

Dimensional parameters

Percolation tank

Recharge to aquifer and surface storage for restricted period. May be used for limited irrigation, livestock and domestic

Permeability high, well defined broad stream channel and presence of intersecting fractures

3–5 m high earthen bund, 5000–10,000 m3 effective storage, shallow cutoff, provision for spillway, silt trap barrier in the upstream

Check dam

Surface storage, Restricted irrigation, and domestic needs

Well defined straight stream channel with level banks, adequate catchment and rocky riverbed without any fractures

2–4 m height of masonry structure, 5000–7000 m3 effective storage, partial treatment to foundation for leakage/seepage, provisions for overflow

Farm pond

For livestock storage, a restricted irrigation

Narrow elongated depression with gentle slope and small catchment area

1–2 m high elongated earthen embankment, 2000–5000 m3 storage, shallow foundation

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