| Well number | L35/1187 | File number | CO6C/32013 |
|---|---|---|---|
| Last known owner | NGAI TAHU FOREST ESTATES | Well status | Active (exist, present) |
| Street/road | Two Chain Road | NZTM grid reference | BW23:54945-91247 |
| Locality | Eyrewell | NZTM X and Y | 1554945 - 5191247 |
| Location description | near shed & water tank behind house | Location accuracy | 1 - 2m |
| CWMS zone | Waimakariri | Use | Domestic and Stockwater, Dairy Use |
| Groundwater allocation zone | Eyre River | Water level monitoring | -- |
| Depth | 119.00m | Water level count | 3 |
| Diameter | 200mm | Initial water level | 33.12m below MP |
| Measuring point description | Top of Casing | Highest water level | 29.08m below MP |
| Measuring point elevation | 71.45m above MSL (Lyttelton 1937) | Lowest water level | 33.09m below MP |
| Elevation accuracy | < 0.1 m | First reading | 29 Oct 2013 |
| Ground level | 0.23m below MP | Last reading | 08 Jun 2016 |
| Strata layers | 15 | Calc min 80% | 33.09m below MP (Estimated) |
| Aquifer name | Aquifer tests | 0 | |
| Aquifer type | Yield drawdown tests | 4 | |
| Drill date | 07 Mar 2013 | Max tested yield | |
| Driller | McMillan Drilling Ltd | Drawdown at max tested yield | |
| Drilling method | Rotary/Percussion | Specific capacity | 12.18 l/s/m |
| Casing material | Steel | Last updated | 29 Jun 2023 |
| Pump type | Last field check | 08 Jun 2016 | |
| Water use data | Yes |
Screens
| Screen no. | Screen type | Top (m) | Bottom (m) | Slot size (mm) | Slot length (mm) | Diameter (mm) | Leader length (mm) |
|---|---|---|---|---|---|---|---|
| 1 | Stainless steel | 111.87 | 112.87 | 2.05 | 125 | 1020 | |
| 2 | Stainless steel | 116.87 | 117.87 | 2.05 | 125 |
Step tests
| Step test date | Step | Yield | Yield GPM | DrawDown | Step duration |
|---|---|---|---|---|---|
| 07 Mar 2013 | 1 | 6.21 | 81.9607239 | 0.51 | 1 |
| 07 Mar 2013 | 2 | 9.92 | 130.92598 | 0.94 | 1 |
| 07 Mar 2013 | 3 | 13.71 | 180.9471 | 1.63 | 1 |
| 07 Mar 2013 | 4 | 15.68 | 206.947525 | 2.25 | 4 |
Comments
| Comment date | Comment |
|---|---|
| 30 May 2013 | Location error L35:52829-64949 |
| 30 May 2013 | NZMG Map Reference updated from: L35:4803-5486 shifted 17040m |
| 30 May 2013 | Driller provides the correct location. |
| 05 Nov 2013 | Visited as Eyrewell Forest area investigation on 29/10/13. |
| 05 Nov 2013 | NZMG Map Reference updated from: M35:64948-52829 shifted 38m |
| 21 Jul 2014 | Consented for 12 l/s. meter required by Nov 2014 |
| 25 Sep 2015 | NZTM Easting/Northing updated from:1554943-5191249 shifted 57m Grid ref provided by Ngai Tahu Farming Limited |
| 06 Jul 2016 | NZTM Easting/Northing updated from:1554886-5191257 shifted 60m. Following differential GPS Survey for Waimakariri Piezo Survey 2016. See C16C/112143. Reference Level MP added. |