Besides the irrigation figures it is necessary to record for each outlet its chainage, size of barrel[29] and commanded culturable area. In the case of a distributary which has been working for years, and on which the outlets are undergoing few alterations, it may be suitable to record the above items in a separate “outlet register,” and to give in the irrigation register a reference to the page of the outlet register. But even in such a case alterations will have to be made from time to time in the outlet register and there is great danger of its becoming spoilt, imperfect or unintelligible. In the case of a distributary on which the outlets are undergoing frequent changes, the items under consideration should be shown crop by crop, and also the material of the outlet—wood or masonry—and the width and mean height of the barrel. In no other way can the working of the outlet be properly followed and understood. It is probable that this procedure is the best in every case, i.e., even when the alterations made are not frequent. By arranging the register as shown in [table III.] the repetition of the entries, when they undergo no alteration, is avoided, only dots having to be made.
[29] The sizes of the outlets should be measured by the suboverseer and some checked by the Subdivisional Officer and the correct sectional area, as actually built, entered.
The [specimen] shows only two outlets on a page, and covers five years, but three outlets can easily be shown on a large page, and the period can be seven years. If there are more than three outlets in the village, the lowest part of the page shows the total of the page instead of the total of the village, and the other outlets are shown on the next page, the grand total for the village coming at the foot.
TABLE III.—REGISTER BY OUTLETS AND VILLAGES.
| Distributary.................................. | Village.................................. | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Name and description of outlet. | Year | Information regarding outlet. | Working of outlet. | ||||||||||||||
| Chainage | Material | Sectional area of barrel. (minimum) | Dimensions of barrel | Area in acres. | Net irrigated, per cent of culturable. | ||||||||||||
| Width | Height | Commanded culturable | Remitted | Net irrigated | |||||||||||||
| Kharif | Rabi | Total | |||||||||||||||
| Register no. Name Bank Flow or lift | 1902-03 | ||||||||||||||||
| 1903-04 | |||||||||||||||||
| 1904-05 | |||||||||||||||||
| 1905-06 | |||||||||||||||||
| 1906-07 | |||||||||||||||||
| Register no. Name Bank Flow or lift | 1902-03 | ||||||||||||||||
| 1903-04 | |||||||||||||||||
| 1904-05 | |||||||||||||||||
| 1905-06 | |||||||||||||||||
| 1906-07 | |||||||||||||||||
| Total of | Village Page | 1902-03 | |||||||||||||||
| 1903-04 | |||||||||||||||||
| - | - | 1904-05 | |||||||||||||||
| 1905-06 | |||||||||||||||||
| 1906-07 | |||||||||||||||||
All the outlets of the uppermost village on the distributary should be entered, first, even though some of them may be downstream of, and bear serial numbers lower than, the outlets of the next village. When one outlet irrigates two or three villages the irrigation of the separate villages can be entered on one page in the places usually allotted to outlets, and the lowest part of the page can show the total for the outlet, the necessary changes in the headings, etc. being made. If any of the villages has other outlets these will appear on another page and the total for the village can also be shown.
The village totals should be posted into a second register prepared somewhat as shown in [table IV.] and totalled. The totals show the irrigation for the whole distributary.[30] If necessary the failed areas can be shown in the register in red ink. If any village is irrigated from two or more distributaries, each portion of the village should be dealt with as if it was a separate village.
[30] Very long channels, e.g. inundation canals from which direct irrigation takes place, can be divided into reaches and the irrigation of the reaches dealt with as if they were separate channels. A reach should generally end at a bifurcation or stopdam.
In all registers some blank spaces should be left for the insertion of new outlets or new villages. The number of pages to be left will depend on local circumstances, which should be considered. In case figures are supplied by the revenue authorities and deal only with whole villages, the details obtained by the canal staff should always be added up and checked with them. Similarly the commanded culturable areas for the outlets and villages should be added up and checked with the known total for the distributary.
TABLE IV.—ABSTRACT OF IRRIGATION BY VILLAGES AND CHANNELS.