This report covers the period November 1999 – June 2000.

The drains sprayed to the end of June are shown in the attached table.

The drains machine cleaned to the end of June 2000 are presented in the attached table. The Rotokohu Canal was cleaned for its full length, with some additional work done in the vicinity of the old Railway Bridge to improve access. More side drain culverts will be required to improve the machine cleaning efficiency next time round.

The Kuaoiti silt trap did not require cleaning.

No significant activities during this period.

A summary of pump hour’s operation for the current year is attached for the members’ information.

A fresh at the end of June, immediately followed by two days of rain in early July caused ponding of approximately one week duration.

A letter from Environment Waikato in response to enquiries from Committee members is attached for members’ information.

A table of the pump control probe levels as at December 1999 is attached.

No subdivisions were commented on in this period.

Approval as to waterway for two replacement bridges over the Rotokohu Canal, to be constructed jointly between Environment Waikato and M Ofsoske, has been given.

Contact has been established with regular rain gauge readers in the catchment area. A summary of monthly and event rainfalls will be able to be prepared for future meetings. The June 2000 total was 199.5mm, with 128mm falling in the last week (26th-30th), and a further 160mm from 1-3 July.

Preliminary analysis of the Paeroa rainfall figures from the Met Service indicated a 2 day rainfall of about 12-15 year return period, and a 3 day fall of 5-10 year frequency. This early July rain would have fallen generally on a catchment saturated from the end of June rain.

Operation of the Partridge Drain water level controls will be undertaken in the near future.

Ian McLeod