CLASSIFICATION OF DAMS

As per ICOLD definition the dams are classified as large dams and small dams depending on the height of the dam irrespective of the parameters. All dams more than 15 mts. in height are classified as large dams and those less than 10 mts. in height as small dams.

Large dams are further classified as

• Category I: 
  Dams having height more than 30 meters or gross storage capacity above 60 Mcum or spillway capacity above 3 thousand cumecs or gated spillway. 

• Category II: 
  Dams having height between 15 Mts. to 30 Mts. or gross storage capacity between 15 Mcum to 60 Mcum or spillway capacity between 2000 to 3000 cumecs or ungated spillway 

• Category III: 
  Dams having a height between 10 to 15 Mts. or gross storage capacity between 1 Mcum to 15 Mcum or spillway capacity of 2000 to 3000 cumecs or having ungated spillway 

Maharashtra State has 1427 large dams, highest number in the country as:

• Category I  : 200 dams

• Category II : 911 dams

• Category III: 628 dams

CLASSIFICATION OF IRRIGATION PROJECTS

Irrigation projects are classified as Minor, Medium and Major Irrigation projects based on cultivable command area of the project. 

AVAILABILITY OF WATER RESOURCES

Based on various assessments studies the 75% dependable yield is 131562 Mm³ .  The permissible use of water for the State is 125936 Mm³.