| Well number | M36/7471 | File number | CO6C/18284 |
|---|---|---|---|
| Last known owner | Mr G F Lowe | Well status | Active (exist, present) |
| Street/road | 1026 DRAIN ROAD | NZTM grid reference | BX23:40277-57839 |
| Locality | Killinchy | NZTM X and Y | 1540277 - 5157839 |
| Location description | Location accuracy | 2 - 15m | |
| CWMS zone | Selwyn - Waihora | Use | Irrigation, |
| Groundwater allocation zone | Rakaia-Selwyn | Water level monitoring | -- |
| Depth | 56.48m | Water level count | 1 |
| Diameter | 250mm | Initial water level | 5.20m below MP |
| Measuring point description | ToC | Highest water level | 3.54m below MP |
| Measuring point elevation | 38.70m above MSL (Lyttelton 1937) | Lowest water level | 3.54m below MP |
| Elevation accuracy | < 0.5 m | First reading | 12 Sep 2014 |
| Ground level | 0.30m below MP | Last reading | 12 Sep 2014 |
| Strata layers | 10 | Calc min 80% | 3.89m below MP (Estimated) |
| Aquifer name | Aquifer tests | 0 | |
| Aquifer type | Yield drawdown tests | 2 | |
| Drill date | 02 Aug 2004 | Max tested yield | 33 l/s |
| Driller | Smiths Welldrilling | Drawdown at max tested yield | 29 m |
| Drilling method | Rotary Rig | Specific capacity | 1.21 l/s/m |
| Casing material | Steel | Last updated | 29 Jun 2023 |
| Pump type | Last field check | 12 Sep 2014 | |
| 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 | 47.475 | 53.475 | ||||
| 2 | Slotted Casing | 53.475 | 56.475 |
Step tests
| Step test date | Step | Yield | Yield GPM | DrawDown | Step duration |
|---|---|---|---|---|---|
| 29 Oct 2004 | 1 | 30.07 | 396.8694 | 24.85 | 0.75 |
| 29 Oct 2004 | 2 | 33.23 | 438.575653 | 28.55 | 0.75 |
Comments
| Comment date | Comment |
|---|---|
| 25 Aug 2003 | Deepen bore M36/4082 |
| 26 May 2005 | Gridref changed from: M36:5025-1946 new grid ref from BCR plan return |
| 28 Jun 2005 | Gridref changed from: M36:5011-1944 Plan from BCR |
| 28 Aug 2012 | 24/7/12 Data received from Boramans |
| 23 May 2013 | 25/1/13 Mid-season data received from Boramans |
| 09 Feb 2014 | NZMG Map Reference updated from: M36:5014-1942 shifted 117m |
| 09 Feb 2014 | NZTM Easting/Northing updated from:1540262-5157854 shifted 110m |
| 14 Jan 2015 | NZTM Easting/Northing updated from:1540152-5157854 shifted 125m |
| 10 Jan 2023 | Reference Level updated using LiDAR imagery in Dec 2022. The existing RL was 37.16 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 38.384m to 38.702m. |