Ground water table in Goa
Ground water table in Goa - North and South Goa
Source: http://www.goaenvis.nic.in/water.htm
Excerpt from above
site
Surface Water Resources
The State has nine rivers, of which six rivers
originate and flow exclusively within the State boundaries and do not have any
interstate implications. However, Terekhol and Chapora rivers originate in
Maharashtra while Mandovi river originates in Karnataka State. All the rivers
except Sal in the South originates on the western slopes and subsequently
meanders over falls and rapids into the coastal plains (during young/initial
stage), from where they tend to become sluggish (during mature stage) and then
ultimately joins estuary mouth and then into the sea (old stage). Most of these
rivers are subject to tidal variations and salinity upto a distance of 20-40
kms upstream from their respective mouth regions as such these have been
referred to as estuaries. Most of these rivers are excellent navigational
channels and are used mostly for transporting ores through barges from ore
loading jetties to Mormugoa Harbour for onwards export.
Out of nine rivers in the State, rough estimation
reveals that basin-wise average runoff is to the tune of about 8436 million
cubic meters (MCM). This entire water resource should not be mistaken as
available for harnessing. As assessed by Central Water Commission (CWC), the
water resource of Goa is 8570 MCM. Many of these rivers are tidal prone upto a
distance of 20-40 kms, and utilizable part of the yield should necessarily be
identified basin wise.
Table 1: Details of river basins in Goa
|
S. No.
|
Name of the River Basin
|
Length within the State
|
Length within the salinity Zone
|
Basin area
|
Average runoff
|
|
(km)
|
(km)
|
(sq. kms)
|
(MCM)
|
||
|
1
|
Terekhol
|
26
|
26
|
71
|
164.25
|
|
2
|
Chapora
|
32
|
32
|
255
|
588.35
|
|
3
|
Baga
|
10
|
10
|
50
|
116.42
|
|
4
|
Mandovi
|
52
|
36
|
1580
|
3580.04
|
|
5
|
Zuari
|
145
|
42
|
973
|
2247.4
|
|
6
|
Sal
|
40
|
14
|
301
|
694.39
|
|
7
|
Saleri
|
11
|
5
|
149
|
343.04
|
|
8
|
Talpona
|
32
|
7
|
233
|
515.59
|
|
9
|
Galgibag
|
14
|
4
|
90
|
187.11
|
|
TOTAL
|
362
|
176
|
3702
|
8436.59
|
Source: Master
Plan for Madei / Mandovi River Basin A Report by The Panel of Experts, Vol. I,
Vol. II
NORTH GOA
 |
 |
 |
 |
 |
 |
 |
SOUTH GOA
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
Water resources department survey finds increase in ground water availabilityExcerpt from above site "Goa's groundwater table is assessed once every three years. In our latest survey, we found that ground water development itself, which stood at 28% in 2011, rose to 37% in 2013. The increase can be attributed to a number of factors, primary among them being the construction of around 368 bandharas across the state having a total storage capacity of approximately 400 lakh cubic feet per second (cusec) of water. This water is good for both, irrigation as well as domestic usage, lessening the dependency on wells and helping recharge the ground water table as a result," WRD's chief surveyor, Anant Bhagwat, said.... Bhagwat also said that the WRD has been keeping a close check on ground water levels in a bid to curb the menace of illegal water extraction that has been nudging the table in areas such as Verna and parts of the Mormugao taluka to semi-critical levels.... |
Comments
Post a Comment