Investigation Circle, NWDA, Hyderabad
Works Entrusted with Investigation Circle, NWDA, Hyderabad
Name of Work Progress Achieved

NWDA Completed 137 Water Balance Study (WBS) of basins/sub-basins and 71 WBS of diversion points proposed under the Peninsular and Himalayan Components of National Perspective Plan (NPP). In addition to this, NWDA is also engaged in preparation of new WBS reports as and when required pertaining to Intra State as well as IBWT Link projects. The revision/updation of these WBS reports incorporating latest data/observations of concerned State Governments/various Departments are a continuous technical job of the Investigation Circle (IC) and attached Investigation Divisions (IDs) of NWDA. Accordingly, the works entrusted to the IC/IDs are:

I Preparation /Revision/Updation of WBS Reports
(a) Godavari basin between SRSP & Polavaram Draft report prepared and the same is under scrutiny.
(b) Vamsadhara basin Draft report prepared and the same is under scrutiny.
(c) Nagavali basin Draft report prepared and the same is under scrutiny
(d) Streams between Nagavali and Godavari Draft report prepared and the same is under scrutiny.
(e) Krishna basin upto Srisailam dam site Preparation of draft report is under progress.
(f) Krishna basin upto Prakasam Barrage Draft report prepared and the same is under scrutiny.
(g) Vedavati sub-basin of Krishna basin Draft report prepared and the same is under scrutiny
(h) Tungabhadra sub-basin of Krishna basin Draft report prepared and the same is under scrutiny
(i) Krishna basin upto Almatti dam site Preparation of draft report is under progress.
j Upper Pennar sub-basin Preparation of draft report is under progress.
k Middle Pennar sub-basin Preparation of draft report is under progress.
l Lower Pennar sub-basin Preparation of draft report is under progress.
m Pennar Delta sub-basin Preparation of draft report is under progress.
n Pennar basin upto Somasila Preparation of draft report is under progress.
o Valapattanam basin Preparation of draft report is under progress.
p Mogral and Chandragiri basin Draft report prepared and the same is under scrutiny
II Compilation & Computerization of Basic Data
(a) Upper Godavari sub-basin Computerization and latest data collection is in progress.
(b) Pravara sub-basin Computerization and latest data collection is in progress.
(c) Streams between Krishna and Gundlakamma Computerization and latest data collection is in progress.
(d) Streams between Gundlakamma and Pennar Computerization and latest data collection is in progress
(e) Gundlakamma basin Computerization and latest data collection is in progress.
(f) Tungabhadra basin Computerization is in progress.
(g) Netravati basin Computerization is in progress.
(h) Cauvery basin Latest data collection is on progress.
(i) Ponnaiar sub-basin Computerization and latest data collection is in progress.
(j) Valapattanam Computerization and latest data collection is in progress.
(k) Mogral & Chandragiri basin Computerization is in progress.
(l) Streams between Vaippar & Kanyakumar Draft report prepared and the same is under scrutiny.
III Intra-State Link Projects

Pre-Feasibility Report (PFR)/Feasibility Report (FR)/ Detailed Project Report (DPR) have to be prepared by the IC/IDs on the proposal as and when received from concerned State Government(s). So far NWDA have received 47 Intra State link proposals from various State Governments. The Intra State link studies presently targeted by the IC/IDs are:

  Preparation of PFRs of Intra-State Link Projects
(a) Koyna-Mumbai City Link Project of Maharashtra Preparation of draft report is under progress.
(b) Bedti-Dharma-Varada Link Project of Karnataka Draft report prepared and the same is under scrutiny
(c) Upper Vaitarna-Kadawa Dev Link Project of Maharashtra Draft report prepared and the same is under scrutiny
IV Preparation of DPRs of Intra-State Link Projects

After approval of the PFR/FR, its DPR has to be prepared with the consensus of concerned State Government(s).

(a) Ponnaiyar (Nedungal)-Palar Link Project of Tamil Nadu Draft report prepared and the same is under scrutiny.
(b) Wainganga (Gosikhurd)- Nalganga(Purna Tapi) Link Project of Maharashtra Various preliminary works for preparation of detailed project report is on progress.
  Preparation of FR of Inter State Link Projects

The then Ministry of Irrigation (Now the Ministry of Water Resources, River Development and Ganga Rejuvenation) and Central Water Commission (CWC) formulated the NPP for Water Resources Development in 1980, by envisaging Inter Basin Water Transfer (IBWT) Project from surplus river basins to deficit ones with a view to minimize the regional imbalances in water resources and optimally utilize the water resources available.

Alternate alignment of Pennar-PalarCauvery link project Draft report prepared and the same is under scrutiny