View source for Glendhu, New Zealand 1980-

== Topography ==
The catchments range in elevation from 460 to 680 mm a.s.l. The easy rolling interfluves have been dissected by moderately steep to very steep valley sides. Wetlands commonly occupy the headwaters of many of the larger sub-catchments. Well-drained soils are found on the interfluves and accompanying slopes, poorly-drained soils on the toe slopes, and peaty soils in the valley bottoms. Typical profiles on the interfluves and most slopes exhibit a highly permeable moss layer and A-horizon overlying a massive, relatively impermeable B-horizon.

== Vegetation / Land Use
GH2 was planted over two-thirds of its area in Pinus radiata in the latter half of 1982. Both catchments were subject to grazing with sheep until planting. GH1 continued to be grazed at approximately one sheep per hectare until 2002. Harvesting commenced in GH2 in March 2014, and is expected to be completed in late 2018.