Dear Sir,

As the catchment area is very small and it seems that
stations are very close to Sea.The chances of rainfall
variation between two stations are very less.

1-Check whether annual values are approximately equal.
2- Then proceed as in attached MS Excel Sheet.

(attachments are not allowed in this group - Moderator)

Is results are encouraging proceed further.

Good Luck.

Shyam Dhar Shukla
M.Tech( Hydraulics and Water Resources Engg.)
Assistant Manager (Hydrology)
National Hydroelectric Power Corporation Limited,
Faridabad, India


--- geopapaioa <geopapaioa@...> wrote:

> The first rainfall station (xanthi station)is at 100
> m altitude and i
> have all the rainfall data from 1980-2000. The
> second rainfall station
> (gerakas) is at 340 m altitude and i have the data
> from 1980-1998 but
> there are missing many years and a lot of months
> from this data(only 6
> years are full). The third station (oraiou) is at
> 640 m altitude and i
> have the data from 1980-2007 but there are missing
> many years and a
> lot of months from this data. The watershed area is
> about 260 km2 .
> The highest level of the watershed is 1300 m and
> the lower 100 m. I
> have no other stations in the research area. What i
> want to do is to
> complete the rainfall data of station gerakas and
> oraiou from the data
> of xanthi station(for their same years 1980-1998).
> The fact is that
> there are no other stations in the area working and
> the most near
> station is about 50 km in other watershed with data
> off enough
> difference(so i can not use the data, non
> homogeneous).I would like to
> thanks all off you that have reply on my message. I
> am waiting for new
> ideas and answers to my problem. Thank you very much
> dear Dr S.H.R.
> Sadeghi for the tips