chapter-i - revenue and disaster management department, haryana

absorbed in sand through percolation and evaporation. Thus the only limited
signs of natural drainage in the district are of ephemeral hiland drainage.
There are no other traces of eVenseasonal rivulets or streams elsewhere inthe
district. Nevertheless, inthe central and north-western parts, where there is
a fair scattering of the remains of the Aravalli system, water does collect in
low-lying areas after the rains, forming ponds orwhat are locally called tals.
These pondsjtals dry upduring summer. There is,however, hardly anyvillage
where there isnopond. Theseponds are formed in naturally low-lyingareas,
orlocations from wherethe earth has beenremoved for making mud bricks for
house construction.
In most parts ofthe district water-table is fairly deep, and the water
brackish. Both these conditions render difficult well or tubewell irrigation.
Theonly conspicuous water channels to be seen inthe district are those of
canals, distributaries and minors dug and constructed recently.l Thus the
general lack of natural drainage or water bodies symbolises the :lrid conditions
dominant inthis district.
A large part of the district iscovered by recent to subrecent deposits
of alluvium and blown sand. The rock exposures are veryfewand these are
generally inthe form ofa chain ofdiscontinuous hills.
The general stratigraphic sequence ofvarious litho units encountered in
the district isgiven below:
Delhi Super Group
Granite, amphibolite, quartz veins,
pegmatite and porphyry
Ajabgarh Formation Slates and phyllites with quartzite intercalations,
quartzite, schists and gneisses
Massive erruginous and calcareous
quartzites, schistose quartZIte with
thin bands of carbonaceous phylite,
quartz-sericite-muscovite schist, quartzbiotite
schist.