Dear Vijayakumar,

Good. The area of godavari valley is occupied by fresh-water fluviatile
sediments ofthe lower gondwana sequence sequence of rocks.

Coming to the point of study reasons to be find out from:

You check the following:
1. slope of the terrain from canal towards to the observation well
2. regional slope of the terrain
3. dip and thickness of the sandstone bed and fracture/joint pattern in the
area of study
4. sequence of the formations present and especially next below the sst
5. at what level the present well present
6. observe the weathering depth of the formation in the area

finally: 7.observe the records of rainfall and water level fluctuation in the
area before and after the canal excavation and during the canal flow times and
nonflow times

8. observe the relationship of between the rainfall and water level
fluctuations

with this analysis you could get the answers.

Best of luck

yours

Dr. Y. Srinivasarao

S V Vijayakumar <vkumarsv@...> wrote:
Sir,

Thanks for your mail and seeking further clarifications on the study area. The
area of interest is the uplands of east Godavri district along NH5 in the out
crop area of Tirupathi sand stone formation, where the aqifer depth go up to 300
m. The canal is about 18m bedwidth and 3 to 4 m deep and mostly incutting and
goes with in a 1 km and cuts across the formation over a length of more than 12
km. Hope this info has given you picture of the situation.

I request you give your comments and and reports of similar observations
elsewhere. Can you please elaborate on the hydrgeology of such formations?

SIncerely,
Vijayakumar


S.V.Vijaya Kumar
Scientist E1, National Institute of Hydrology,
Deltaic Regional Centre, Siddartha Nagar, Kakinada 533003
Andhra Pradesh, India

Tel: (0884) 2372254(work); 2359570(home); 2350054(Fax)

Email: vkumarsv@... vkumarsv@...


---------------------------------
To help you stay safe and secure online, we've developed the all new Yahoo!
Security Centre.









DR. Y. SRINIVASA RAO
DEPARTMENT OF GEOLOGY
SRI VENKATESWARA UNIVERSITY
TIRUPATI - 517 502
ANDHRA PRADESH
INDIA

---------------------------------
Yahoo! Photos
Ring in the New Year with Photo Calendars. Add photos, events, holidays,
whatever.

[Non-text portions of this message have been removed]