Irrigation and Inter-Colonial Co-operation. 



2>(^1 



approximate figures for these projects are given in the following 

 table :— 



Particulars. 



(a) Excluding increased value of Land rendered Irrigable. 



I. Total estimated cost 

 of Project ... 



283,000 



2. Full Supply Storage Mill Cft. '4,165-82 



3. Estimated rate of ' £ per 



Storage ... Mill Cft. 33-36 



4. Area Irrigable 



5. Cost per acre Irrig- 



able (I) -(4) ... 



6. Estimated net 



Revenue ... 



7. Percentage Return 



of (6) on (I) 



Acres. 



£ 



£ 



p.c. 



21,600 



1310 



16,200 



572 



945,000 

 5,54572 



38-50 

 60,000 



15-70 



48,000 



508 



285,000 

 2,40373 



47-80 

 18,000 



15-83 



18,900 



663 



515,000 

 2,603-96 



100-30 

 26,000 



1980 



32,500 



6-31 



1,144,000 

 11,45100 



3144 

 90,000 



12-71 



67,500 



590 



(b) Including increased value of Land rendered Irrigable. 



8. Estimated Increased 

 value of land @ 

 £10 per acre 



9. Net estimated cost 



of Project (I) -(8) 



10. Percentage Return 



of (6) on (9) ... 



270,000 



390,000 



at £15 per acre. 



15,000 

 126-00 



125,000 

 31-00 



900,000 



244,000 

 27-66 



It will be seen from this table that, although the schemes 

 proposed are of fair size, none are of heroic dimensions, and, 

 compared with the Chenab Canal, are on a moderate scale. There 

 are, however, but very few other projects in the Transvaal from 

 each of which even as much as 20,000 acres can be irrigated, and 

 that with less certainty of supply and at greater cost than those from 

 the Vaal. 



The Orange River Colony has drawn up a very large scheme 

 at Parys for the irrigation of some 300,000 acres at a cost of 

 about ;^3,ooo,ooo. It is possible that this scheme could be extended 



