The streams and rivers in our region are under pressure from human practices. Stock access to waterways, water extraction, nutrient and sediment runoff, and vegetation clearance can change the environment of our waterways and this affects the water and habitat quality.
The Waikato Regional Council monitors riparian fencing to assess the risk of stock entering waterways. It quantifies the proportion of the region’s waterways that have fencing or require fencing to prevent stock access.
The regional riparian characteristics survey provides a repeatable and quantitative assessment of riparian fencing, vegetation, and stream-bank erosion through pastoral land in the Waikato region. In addition to supporting catchment management zone works the survey information potentially supports our biodiversity, biosecurity and environmental education strategies and work programmes.
The survey provides a benchmark on stock access to waterways and, through on-going monitoring, can provide a gauge of the effectiveness of Waikato Regional Council’s riparian policies.
Quantifying the length (and proportion) of stream banks fenced provides us with an indication of stock access to waterways and informs us as to what proportion of bank length still requires fencing in the region and/or management zone.
The amount of riparian fencing (expressed as a proportion of bank length) is used as an indicator of stock access to waterways. Excluding stock from waterways reduces damage to stream banks and vegetation, which indirectly reduces sediment loads and limits direct faecal contamination.
This indicator shows:
Jones H, Kimberley M, Hill R, Borman D 2016. Riparian characteristics of pastoral waterways in the Waikato region, 2002-2012. Waikato Regional Council, Hamilton.
The indicator is updated every five years. Data has been collected in 2002, 2007, and 2012 to coincide with Dairying and Clean Streams Accord targets.
Preparations for the next regional riparian characteristics survey, including any refinements to the survey method and design, will get underway in 2016/17. Data collection for the next survey is due to be undertaken during the summer/autumn period of 2017/18.
Soil Scientist – Science and Strategy Directorate