| Well number | K37/1430 | File number | CO6C/17782 |
|---|---|---|---|
| Last known owner | Pekanga O Te Awa Farms Limited | Well status | Active (exist, present) |
| Street/road | 364 Rawles Crossing Road R D 1 | NZTM grid reference | BY21:97114-41487 |
| Locality | Ashburton | NZTM X and Y | 1497114 - 5141487 |
| Location description | Roadside on Rawles Crossing Rd | Location accuracy | 2 - 15m |
| CWMS zone | Ashburton | Use | Irrigation, |
| Groundwater allocation zone | Hakatere/Ashburton River | Water level monitoring | -- |
| Depth | 38.30m | Water level count | 2 |
| Diameter | 300mm | Initial water level | 2.10m below MP |
| Measuring point description | ToC | Highest water level | 1.74m below MP |
| Measuring point elevation | 117.18m above MSL (Lyttelton 1937) | Lowest water level | 2.99m below MP |
| Elevation accuracy | < 0.5 m | First reading | 22 Jun 2017 |
| Ground level | 0.30m below MP | Last reading | 23 Aug 2021 |
| Strata layers | 7 | Calc min 80% | 1.91m below MP (Estimated) |
| Aquifer name | Aquifer tests | 0 | |
| Aquifer type | Yield drawdown tests | 7 | |
| Drill date | Max tested yield | 45 l/s | |
| Driller | McMillan Drilling Ltd | Drawdown at max tested yield | 21 m |
| Drilling method | Rotary Rig | Specific capacity | 2.93 l/s/m |
| Casing material | STEEL | Last updated | 29 Jun 2023 |
| Pump type | Submersible | Last field check | 23 Aug 2021 |
| 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 | 32.3 | 38.3 |
Step tests
| Step test date | Step | Yield | Yield GPM | DrawDown | Step duration |
|---|---|---|---|---|---|
| 18 Apr 2001 | 1 | 24.6246 | 325 | 8.4 | 30 |
| 18 Apr 2001 | 2 | 24.6246 | 325 | 8.4 | 0.5 |
| 18 Apr 2001 | 3 | 30.3072 | 400 | 11.6 | 1 |
| 18 Apr 2001 | 4 | 37.884 | 499.999969 | 16.2 | 1 |
| 18 Apr 2001 | 5 | 45.4608 | 600 | 20.5 | 1 |
Comments
| Comment date | Comment |
|---|---|
| 18 Apr 2001 | Mr Andrews intends drilling to such a depth that the bore is not hydraulically connected to either rivers. |
| 11 May 2006 | Gridref changed from: K37:0707-0313 |
| 11 May 2006 | Monitoring site visit 24/2/06 - Flow measuement taken. SteveH |
| 11 May 2006 | Monitoring site visit 24/4/06 - New pump in, flow measurement taken. SteveH |
| 09 Jun 2011 | 01/06/2011-Site visit by Evan Swale to up load data logger |
| 02 Nov 2017 | NZTM Easting/Northing updated from:1497143-5141485 shifted 1816m |
| 02 Nov 2017 | NZTM Easting/Northing updated from:1496353-5143121 shifted 1802m |
| 10 Jan 2023 | Reference Level updated using LiDAR imagery in Dec 2022. The existing RL was 118.3 and the QAR RL was 4. The method of calculating the original RL was: Interpolated DTM. If GL from MP is updated in future please assess if RL also needs to be updated. |
| 10 May 2023 | Dec 2022 Reference Level update using LiDAR was in NZVD 2016, rather than Lyttelton 1937. Rectified in May 2023 by using the previously determined LiDAR elevation value and LINZ conversion tool to calculate Lyttelton 1937 elevation and update Reference Level field. Reference Level updated from 116.813m to 117.175m. |