Bayram and Bağlık Dams and Hydroelectric Power Plants (HEPP) are energy purpose integrated dams and they are located in northeast region of Turkey on Çoruh River basin Berta tributary, on the State road connecting Artvin Province Center to Ardahan Province center.
The average annual flow of Berta river is about 606x106 m3 (19,20 m3/sec), at Bayram dam site and 786x106 m3 (24,90 m3/sec) at Bağlık dam site.
Bayram Dam is Rock fill dam with impervious core and will produce 265 GWh energy annually. Bayram dam will feed Bağlık dam at its downstream by means of a tailrace tunnel of 7.990 m long. Bağlık Dam will be constructed as concrete gravity dam and will produce 238 GWh energy using the water supplied from Bayram reservoir.
BAYRAM DAM and HEPP RESERVOIR High water level 740,00 m Low water level 686,00 m Available drawdown depth 54,00 m Sedimentation level 676,00 m Gross storage capacity 133 x 106 m³ Effective storage capacity 113 x 106 m³ Reservoir area Maximum 38 km² DAM Type Rock fill dam with impervious core Crest elevation 743,00 m Thalweg elevation 635,00 m Cut-off foundation elevation 600,00 m Height of dam (from foundation) 143,00 m Height from thalweg 108,00 m Crest length 388,58 m Volume of dam body 6.244 x 106 m³ DIVERSION TUNNEL Diversion capacity 192,00 m³/sec Location, type, number Left bank, circular, 1 pcs. Inner diameter 4,50 m Length 760,37 m SPILLWAY Location Left bank Type Shut with gates Design flood 1.660 m³/s Crest elevation 728,00 m Crest width (incl. mid-pier) 23,00 m Energy dissipater Energy dissipater basin type III ENERGY TUNNEL Type Circular, concrete lined Number 1 Discharge capacity 43,00 m³/sec Inner diameter 3,40 m Length 90,28 m STEEL LINING ENERGY TUNNEL Type Steel embedded Number 1 Inner diameter, length 3,40, 285,52 m TAILRACE TUNNEL Type Horseshoe, non-pressure, concrete lined, shotcrete Max. discharge 43,00 m³/s Inner diameter (with lining) 4,60 m Length 7.990 m Slope 0,00077 DEVELOPMENT PLAN Intake water level 724,18 m Tailwater level (1st and 2nd unit) 534,16, 535,75 m Gross head (1st and 2nd unit) 204,42, 202,83 m Effective head (1st and 2nd unit) 190,02, 188,43 m Maximum discharge 43,00 m³/s ANNUAL ENERGY PRODUCTION Firm energy 153,50 GWh Secondary energy 111,50 GWh Total energy 265,00 GWh BAĞLIK DAM and HEPP RESERVOIR High water level 530,00 m Low water level 527,00 m Available drawdown depth 3,00 m Sedimentation level 517,00 m Gross storage capacity 7,3 x 106 m³ Effective storage capacity 1,0 x 106 m³ Reservoir area 0,37 km² DAM Type Concrete Gravity Dam Crest elevation 533,00 m Thalweg elevation 465,00 m Foundation elevation 459,00 m Height of dam (from foundation) 74,00 m Height from thalweg 68,00 m Crest length / width 198,00 / 5,00 m Upstream slope 1/0.10 - 1/ .30 Downstream slope 1/0.80 Concrete volume 203 x 103 m³ DIVERSION FACILITIES Location Left bank Diversion capacity (Q50) 309,80 m³/sec Number / Type of tunnel 1 ea. trapezoid section Width / Height / Length of tunnel 8,00 / 3,20 / 176,54 m Slope of tunnel 1/0.25 -0.022 SPILLWAY Location Dam body Type Chute channel with radial gates Design flood 1.830 m³/sec Crest elevation 519 m Width of spillway crest (incl. mid pier) 27,00 m (pier width 3 m) Energy dissipater Bucket basin STEEL LINING ENERGY TUNNEL Type Steel embedded Number 1 Discharge capacity 52,00 m³/sec Inner diameter 3,60 m Length 201,01 m TAILRACE TUNNEL Type Horseshoe, non-pressure, concrete lined, shotcrete Max. discharge 52,00 m³/sec Inner diameter (with lining). 4,90 m Inner diameter (without lining) 6,10 m Length 4.780 m Slope 0.00076 Inlet elevation 394,30 m Outlet elevation 390,67 m DEVELOPMENT PLAN Average water level 529,12 m Tailwater level (1st and 2nd unit) 396,88 -398,73 m Gross head (1st and 2nd unit) 132,24 -130,39 m Effective head (1st and 2nd unit) 132,02 -130,17 m Maximum discharge 52,00 m³/sec ANNUAL ENERGY PRODUCTION Firm energy 135,6 GWh Secondary energy 102,4 GWh Total energy 238,0 GWh
