Grid Reference |
38°00’21”S |
38°01’43”S |
|
176°11’03”E |
176°07’54”E |
Year DB constructed |
October 2011 |
June 2012 |
Topography of catchment |
Flat, rolling and hill |
Mainly
rolling |
Size of DB catchment (ha) |
55.0 |
19.7 |
Area of DB catchment downstream of inflow monitoring (ha) |
8.3 |
1.8 |
Height of bund at spillway (m) |
1.56 |
1.80 |
Height of upstand riser (m) |
1.36 |
1.60 |
DB pond volume at spillway
|
7,110
m3
|
2,244 m3
|
Ratio of pond volume to catchment area
(m3:ha) |
129:1 |
114:1 |
Pond area when pond filled to spillway |
12,221
m2
|
2,940 m2
|
Measured infiltration rates inside and outside ponding
areaa (mm/h)
|
Inside: 19
Outside: 36
|
Inside: 12
Outside: 37
|
Soil classifications
|
New Zealand: Buried-allophanic Orthic Pumice
USA: Vitric Hapludand
|
New Zealand: Typic Orthic Podzols
USA: Andic Haplohumod
|