Climate, weather and mapping

Local terrain and weather influences the types of enterprises that are suitable for a given location. Detailed maps allow for better planning and detailed, accurate design of landscape improvements.

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A bespoke rain gauge

A bespoke rain gauge

Our high tech, digital rain gauge device finally failed and rather than replace it with another complex 'solution' I decided to construct a more basic, traditional instrument, only on a larger scale. Essentially this is just a funnel that intercepts and collects a given area of rainfall and concentrates it in a narrow tube, magnifying the results for easy measuring.

I purchased a cheap stainless steel funnel with a diameter of 52mm connected to 2 meters of clear plastic tubing with a diameter of 12.5mm.
The ratio of cross-sectional area between the two diameters is 17 so each 1mm of rainfall gathered by the funnel displays as 17mm in the tubing.

The tap at the bottom is required to drain the gauge after each measuring period.
August 25, 2019
  rain  technology   
Property mapping service

Property mapping service

Having a detailed map of your farm or lifestyle block assists with planning future alterations and can be a valuable asset to new owners. I can produce digital maps containing access ways, paddock areas, fence lengths, water and electricity networks and other important features.
Visualising yearly rainfall distribution

Visualising yearly rainfall distribution

This chart shows annual rainfall by month for the years 1990 - 2014 (and partial 2015). While there is a definite tenancy for rain to occur in June and July there is also obvious bumps in October, March and April. Wider areas of colour represent times of high rainfall while narrow regions are dryer.
It becomes clear that rainfall can occur at any time throughout the year and that dry years follow periods high rainfall. With this in mind it makes a lot of sense to be approaching water catchment and management with a multi year view of charging up soil moisture during wet times to carry us through periods of below average rainfall.

Data obtained from NIWA Ferniherst dataset
September 20, 2015
  weather  rain  climate  chart