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STRUMA A KRUPNIK
STATION IDENTIFICATION

Country : Bulgaria - River Name :Struma - Major Basin : Aegean Sea
Station Name : Krupnik - Station Code or number :51800
Coordinates : 41°50' N latitude - 23°09' E longitude and 262,06 m above sea level
Catchment area : 6780 sq km - Date Station Opened : March 23, 1950

CHANNEL CHARACTERISTICS
Channel Geometry : 50 m width and 8,2 m depth with stable river bed cross-section, underlain by stones
The river bed is man made
Describe the hydraulic conditions within the measuring station : trapezium-shaped cross-section, rectilinear river section with small longitudinal slope

HYDROLOGICAL REGIME
Influenced flow with flash floods
Multiple annual abs. max. and min. mean flow : 752 cu m/s; 0,76 cu m/s

EQUIPMENT AND PERSONNEL
Equipment installed and status : small house to protect the devices, in operation conditions
Gauging equipment and status : water level gauge with continuous record on paper tape
Observer or watchman : watchman

VOLUME AND QUALITY OF INFORMATION AVAILABLE
DAII : continuous measurement and availability since 1950
(Discharge Available Information Index :
number of monthes with complete discharge information / number of observed years / 12)
Rating curve status (currently updated or not) : currently updated
Number of discharge measurements (dm) available : from 12 to 25 times per year
Highest water level observed : 625 cm - Date :February 6, 1963
Highest water level at which dm taken : - Date :
Lowest water level observed : 163 cm - Date :August 24, 1962
Data storage medium (computerized or not) : computerised
Data dissemination medium (diskette or hand filled form) : hand filled form
Status of the database (which data, currently updated or not) : water levels and discharges, currently updated

OPERATION AND MAINTENANCE (O & M)
Number of visits currently undertaken per year : 12
Ease of access : easy access
Ease of flow measurement (describe) : distant method for flow velocity measuring
Technique(s) used for discharge measurement (wading, bridge, slope area, etc.) : cable system
Equipment used in discharge measurement : current meters
Equipment used in stage measurement : foot gauge and water level gauge with continuous record
Operation and maintenance budget per annum for the station : 1150 $ per annum for the station (including 850 $ direct costs and 300 $ indirect costs

BENEFITS AND INTEREST
Current use of the data and who uses it (describe) : National Water Council, Ministry of Environment, National Electric Company, Design organizations, Water Supply and Irrigation companies, National Institute of Meteorology and Hydrology (for research and operational purposes)
Estimated revenue from use of data (if charges are raised) per annum : the eventual imputs are not possible to be estimated
Expected future use and where will it be used (describe) : in all aspects of water management, flood control and droughts prevention
Additional data needed (which ones) : evaporation factors measurements are essential, primary water quality parameters will be very usefull
Real time needed (for what purposes) : for real-time forecasting and flood protection

SERVICE ORGANIZATION
Name :The NIMH local branches, Dept of Hydrology, Dept of Instruments and Automatation
Organization :National Institute of Meteorology and Hydrology
Address :66 Tzarigradsko Chaussee, 1784 Sofia, Bulgaria
Number of staff :850 fully employed staff members in the country

Form filled by :Dr Todorino Bojkova
Title :Head, Hydrological Division, Hydrological Department
Date : 14.07.95