The most important period in studying and issuing observation network state of Georgia is 1960-1987, when several annuals and reference books "Hydrological Study" (1964) and "Main Hydrological Characteristics" (1967,1977,1978,1987) were published. In 1969 the monograph "Surface Water Resources" and in 1974 the reference book "Hydrological Description of West Transcaucasus rivers, lakes and water storage" were brought out.
The annual and multy-years data for 1987-1992 are saved in manuscripts. Georgia has had both: the state and the departmental (Tbilisi State University (1 - station), Ministry of Energy (7), Institute of HydroProject (0)) net functioning nowadays.
Today state hydrometeorological network consists stations on 86 rivers, 3 lakes and 5 water storage. We have water level and temperature data measuring on these stations. The measure equipment now is out of order on the several stations, that's why water discharge and sediment discharge are measured only on the ten stations.
Lake stations work by second level program - there are measurements of levels and temperature at the coastal line. Observations on the water storage aquatory are not done.
The stations for measuring evaporation from water surface are placed in hard ecology regions, but unfortunately on 6 stations are used instead of 16, the reason is the lack of equipment.
Hydrological Department is planning to reconstruct stopped seashore stations in Batumi, Kobuleti and Poti.
a. Hydrological data.
Observation data are printed in journals. Since 1978 the information was sent to Russia for the following machine treatment. Russia stores the following data:
Hydrological Department is planning to hand them this year. The data in computer has not existed from 1992, they are saved only in journals.
b. Hydrochemical parameters.
In former USSR the chemical parameters were worked up in similar way in all republics. Before 19985 all explorations were gathered and carried out in Russia, but after 1985 explorations continued in republics. So happened in Georgia too. In 1993 Georgia the first in former USSR began the processing system of data bases by using PC.
The water samples had been taken from 86 flow objects of rivers, which included 180 posts of 144 stations till 1990 in Georgia. Hydrological stations are divided in to 4 category by rate of pollution. The samples were taken every day, once a month and eight times in a year according to category in compliance of hydrological phases. 57 parameters were determined in each sample. 12 parameters among them were measured in stations. Now it's not possible to determine amount of any heavy metals.
In 80th automatic stations functioned together with regime observation stations on river Mtkvari in Tbilisi. Now they are out.
In 1996 only 277 samples were taken instead of 1378 from 34 rivers, 2 lakes, 2 water storage and 1 canal.
b. Atmosphere Precipitation.
The chemical compositions of atmosphere precipitation's were studied in 30 towns of Georgia. 15 ingredients were determined in taken samples (table), but in 1996 atmosphere precipitation samples were obtained from 4 stations instead of 14 towns.
c. Discharge and Clastic Deposits Granulometry.
By 1990 sediment precipitation samples were delivered from 83 hydrological stations and clastic deposits - from 26 stations. In 1996 the samples were taken only from 1 station (6 samples).
d. Black Sea Water.
The observation work on the state of Black
Sea Water were hold on 45 stations in 8 towns and were determined their
hydrochemical and hydrobiological parameters.
|Parameters Determining in Surface Water.|
|1||smell||21||O2 chemical use||41||Ag|
|2||transparency||22||O2 biochemical use (5 round the clock)||42||potassium|
|5||sediment particles||25||nitrite nitroggen||45||Arsenic|
|6||pH||26||mineral N2 combination sum||46||Ti|
|7||O2 deluted with water||27||Phosphates||47||Bi|
|8||O2 consentration rate||28||acid of silicium||48||Sum of heavy metals|
|9||CO2||29||specific electric conductivity||49||evaporating phenons|
|10||sulphurhydrogen||30||Eh||50||rosins and asphaltines|
|12||chlorides||32||Fe||52||surface active synthetic material|
|Parameters Determining in Atmosphere precipitation|
|Sea Water Rate Observation parameters|
|N||Hydrochemical parameter||N||Hydrochemical parameter|
|1||pH||1||whole quantity of microorganisms|
|2||concentration of salt||2||quantity of saprophyte microorganisms|
|3||deluted oxygen||3||quantity of oil acid microorganisms|
|4||oxygen relative concentration||4||quantity of bentosite organisms|
|5||nitrites||5||biomes of bentosite organisms|
|6||phosphates||6||quantity of zooplactonic organisms|
|7||Si||7||biomes of zooplactonic organisms|
|8||oil products||8||species of zooplactonic organisms|
|9||pesticides (DDT, DDE, Gamma - HCCH)|