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Spill details of major tank controlled by irrigation department

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Spill details of major tank controlled by irrigation department
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Irrigation Department
Water Management Division 
Summary of  Reservoir(Major) spilling status      

Date 15.01.2025                    Time : 3.00 p.m 

 
NO RANGE TOTAL NO OF TANKS NO OF SPILLING  TANKS PERCENTAGE OF SPILLING TANKS
1 AMPARA 9 7 78%
2 ANURADAPURA 10 10 100%
3 BADULLA 7 4 57%
4 BATTICALOA 4 3 75%
5 HAMBANTOTA 10 5 50%
6 GALLE 2 1 50%
7 KANDY 3 1 33%
8 KURUNEGALA 10 4 40%
9 MONARAGALA 3 2 67%
10 POLONNARUWA 4 4 100%
11 PUTTALAM 2 2 100%
12 TRINCOMALEE 5 1 20%
13 MANNAR 4 1 25%
  TOTAL 73 45 62%
         
Note Kaudulla and Lunugamwehera downstream are  in Alert level  
  Medium reservoirs spilling 23    

 

Details of Major Reservoir Spilling as at 3.00 p.m. (15.01.2025)  
No Range/ Division Reservoir River/ Stream District No. of gates opened or Ungated spilling height (inch) Spill Discharge (cusec) Status of Downstream
1 Ampara/Ampara Ekgal oya Gal oya Ampara Spill=(6") 233 Normal
2 Ampara/Ampara Namal oya Gal oya Ampara Spill=(1') 990 Normal
3 Ampara/Ampara Ambalan oya Gal oya Ampara Spill=(1'2") 769 Normal
4 Ampara/Mahaoya Rambakan oya Mundeni aru Ampara Spill GO=(1'6"@2)  1756 Normal
5 Ampara/Ampara Pannalgama Galoya Ampara Spill=(8") 126 Normal
6 Ampara/Pothuwila Rottai Karada oya Ampara Spill=(8") 1076 Normal
7 Anuradapura / Rajangana Rajangana Kala oya Anuradhapura GO=(5'@4,4'@2,3'@2)  9000 Normal
8 Anuradapura / Anuradapura Mahakandarawa Malwathu Oya Anuradhapura Spill=9" GO=(9"@2) 2617 Normal
9 Anuradapura / Anuradapura Mahawilachchiya Malwathu Oya Anuradhapura Spill=(12") GO=(4'@2)  3009 Normal
10 Anuradapura / Anuradapura Nuwara Wewa Malwathu Oya Anuradhapura spill= (16") 1204 Normal
11 Anuradapura / Anuradapura Manankattiya Malwathu Oya Anuradhapura Spill=1' 1" GO=2'@4>   Normal
12 Anuradapura / Nahchaduwa Nachchaduwa Malwathu Oya Anuradhapura GO=(4'@6) 2889 Normal
13 Anuradapura / Huruluwewa Huruluwewa Yan oya Anuradhapura Spill=(1') 1552 Normal
14 Anuradapura / padaviya Padaviya Mora oya Anuradhapura Spill=970 GO=(2'6"@2) 2600 Normal
15 Anuradapura / padaviya Wahalkada Yan oya Anuradhapura Spill GO=(1"@6) 324 Normal
16 Anuradapura / padaviya Yan oya Yan oya Anuradhapura GO=(18"@3)  4116 Normal
17 Badulla / Mapakada Sorabora Mahaweli Ganga Badulla RG=(44"@5)  549 Normal
18 Badulla / Mapakada Dambarawa Mahaweli Ganga Badulla SPill=(9") 620 Normal
19 Badulla / Badulla Ambewela Mahaweli Ganga Badulla Spill=(2")  62 Normal
20 Badulla / Badulla Kande ela Mahaweli Ganga Badulla Spill=(1")  3 Normal
21 Batticaloa / Rugam Unnichchai Mahilawettuwan Aru Batticaloa RG=(24"@1,18"@2)  1603 Normal
22 Batticaloa / Rugam Rugam Mundeni aru Batticaloa Spill=(14") RG=(84"@2) 7783 Normal
23 Batticaloa / Rugam Punanai Anicut Maduru oya Batticaloa RG=(120''@9)  5694 Normal
24 Batticaloa / Navakiri Navakiri Andal oya Batticaloa Spill=0.25'  1815 Normal
25 Hambantota/ Tissamaharama Weerawila kiridi oya Hambantota Spill=3",RG=(30"@3)  562 Normal
26 Hambantota/ Tissamaharama Bandagiriya Malala ara Hambantota Spill GO=(12"@4,24"@3)  740 Normal
27 Hambantota/ Tissamaharama Thissa wewa Kiridi oya Hambantota Spill=2", (3"@1) 86 Normal
28 Hambantota/ Tissamaharama Lunugamwehera Kiridi oya Hambantota Spill GO=(0.3'@2,0.6'@4)  2972 Alert
29 Hambantota/ Tissamaharama Yodha wewa Kiridi oya Hambantota Spill=(12"@2)  106 Normal
30 Galle /  Matara Ellewela Nilwala Ganga Galle  Spill=(2")  9 Normal
31 Kandy / Dambulla Wemedilla Kala Oya Kandy Spilling 91 Normal
32 Kurunegala / Nikaweratiya Mediyawa Mee Oya Kurunegala Spilling - Normal
33 Kurunegala / Galgamuwa Ambakolawewa Kalaoya Kurunegala RG=(6"@2)  297 Normal
34 Kurunegala / Galgamuwa usgala Kalaoya Kurunegala Spilling=537(6")  537 Normal
35 Kurunegala / Nikaweratiya Deduru oya Deduru oya Kurunegala RG=(3'@2)  4100 Normal
36 Polonnaruwa/Minneriya Girithale Mahaweli Ganga Polonnaruwa Spill=(4") GO=(2') 276.7 Normal
37 Polonnaruwa/Minneriya Minneriya Mahaweli Ganga Polonnaruwa Spill=(12"@5,24"@1,30"@1)  1875 Normal
38 Polonnaruwa/Polonnaruwa Parakrama samudraya Mahaweli Ganga Polonnaruwa Spilling=(2'@6) 1530 Normal
39 Polonnaruwa/Kaudulla Kaudulla Mahaweli Ganga Polonnaruwa GO=(1'@6,9"@6)  3000 Alert
40 Puttlam /Puttlam Tabbowa Mee oya Puttlam RG=440(1'@2) 440 Normal
41 Puttlam /Iginimitiya Iginimitiya Mee oya Puttlam RG=(1'@2) 1000 Normal
42 Trincomalee/Kantale Wan Ela Mahaweli Ganga Trincomalee Spill=0.41' 110 Normal
43 Monaragala / Monaragala Muthukandiya Hada oya Monaragala Spill=(2")  180 Normal
44 Monaragala / Monaragala Ethimale Wila Oya Monaragala Spill=(4") 80 Normal
45 Mannar/Mannar Giants Tank Malwathu oya mannar Spill=(2")  81.6 Normal
               
               
               
Total No. of Major Reservoirs under ID     73 Notations:-      RG-Radial Gates  
Total No. of Medium Reservoirs under ID    171       US - Ungated Spill  
Overall average Capacity in %    91.6%       FSL - Full Supply Level  
No.of Major Spilling reservoirs/ Anicuts   45       Cusec- Cubic Feet per second   
         
  Medium reservoirs spilling  details  
No Range/ Division Name of Medium Reservoir River/ Stream District No. of gates opened/Ungated spilling height (inch) Spill Discharge (cusec)  
1 Ampara/Mahaoya Tampitiya Mundeni aru Ampara spill=(6")  570  
2 Ampara/Mahaoya Radella Heda oya Ampara Spill=(2")  22  
3 Ampara/Pothuwila Lahugala Willa oya Ampara Spill=(6") 338  
4 Ampara/Pothuwila Panama Karada oya Ampara Spill=(1") 16  
5 Ampara/ Ampara Ampara Gal Oya Ampara Spill=(5")  292  
6 Anuradhapura/Rajanganaya Angamuwa Kala oya Anuradhapura GO=(2'@2) 1200  
7 Anuradapura /Anuradapura  Abaya wewa Malwathu Oya Anuradhapura spill=(12") 330  
8 Anuradapura /Anuradapura  Tissa wewa Malawathu oya  Anuradhapura spill=8.5" 120  
9 Anuradapura / Nahchaduwa Thuruwila Malwathu Oya Anuradhapura spilling=(5") GO=(1')  218  
10 Badulla / Badulla Bomuruella Mahaweli Ganga Badulla Spill=(4") 36  
11 Badulla / Mapakada Dehigama Maduru Oya Badulla Spilling =(1") 13  
12 Badulla / Mapakada Demodara Mahaweli Ganga Badulla Spilling=(1") 18  
13 Batticaloa /Rugam Weligahakandiya Mundeni aru Batticaloa Spill=(13") Spill GO=(24"@4) 839  
14 Batticaloa /Rugam Wedamunai Maduru Oya Batticaloa Spill=(3") 103  
15 Galle /  Matara Denagama kirama oya Galle  Spill=(2") 17  
16 Galle /  Matara Haliela nilwala ganga Matara Spill=(1") 0  
17 Monaragala / Bibila Baduluoya Gal Oya Monaragala Spilling=(2") 45.35  
18 Monaragala / Bibila Mallipotha Gal Oya Monaragala Spill=(3")  25  
19 Monaragala / Wellawaya Alikotaara Kiridioya Monaragala spill =(3@36") 1385  
20 Monaragala/Monaragala Kotiyagala wilaoya Monaragala spill level    
21 Monaragala/Monaragala Sugaladevi Govidu oya Monaragala Spill=(6") 115  
22 Hambantota/ Tissamaharama Debarawewa kiridioya Hambantota Spill=(2") 15  
23 Trincomalee/Kanthale Peramaduwa Mahaweli Ganga Trincomalee Spilling(1") 115  
               
  Medium reservoirs spilling 23          
               
               
  Signed            
  Eng.H.M.P.S.D.Herath            
  Director of Irrigation (Water Management)          
  077-4448919            
               
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