| Well number | L36/1027 | File number | CO6C/07892 |
|---|---|---|---|
| Last known owner | Bakker Bulbs Limited | Well status | Active (exist, present) |
| Street/road | THOMPSONS TRACK | NZTM grid reference | BX22:20631-54333 |
| Locality | Rakaia | NZTM X and Y | 1520631 - 5154333 |
| Location description | BTWN THOMPSON TRACK & RAILWAY TRACK | Location accuracy | 1 - 2m |
| CWMS zone | Ashburton | Use | Irrigation, Domestic and Stockwater |
| Groundwater allocation zone | Chertsey | Water level monitoring | -- |
| Depth | 84.50m | Water level count | 1 |
| Diameter | 300mm | Initial water level | 43.00m below MP |
| Measuring point description | Highest water level | 40.74m below MP | |
| Measuring point elevation | 109.66m above MSL (Lyttelton 1937) | Lowest water level | 40.74m below MP |
| Elevation accuracy | < 0.1 m | First reading | 29 Aug 2024 |
| Ground level | 0.45m below MP | Last reading | 29 Aug 2024 |
| Strata layers | 5 | Calc min 80% | 56.88m below MP (Estimated) |
| Aquifer name | Aquifer tests | 0 | |
| Aquifer type | Unknown | Yield drawdown tests | 2 |
| Drill date | 17 Mar 1995 | Max tested yield | 27 l/s |
| Driller | McMillan Drilling Ltd | Drawdown at max tested yield | 15 m |
| Drilling method | Rotary/Percussion | Specific capacity | 1.82 l/s/m |
| Casing material | STEEL | Last updated | 29 May 2025 |
| Pump type | Unknown | Last field check | 29 Aug 2024 |
| 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 | 80.5 | 84.5 |
Step tests
| Step test date | Step | Yield | Yield GPM | DrawDown | Step duration |
|---|---|---|---|---|---|
| 17 Mar 1995 | 1 | 26.5 | 349.751862 | 14.55 | 3 |
Comments
| Comment date | Comment |
|---|---|
| 09 Feb 2005 | Gridref changed from: L36:3058-1594 |
| 10 Aug 2006 | Owner changed from LIEMBURG, J. Advice from consultant for CRC030538.1 |
| 12 Feb 2010 | Visited for Well QA Jan 2010 |
| 10 Jan 2023 | Reference Level updated using LiDAR imagery in Dec 2022. The existing RL was 109.34 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 109.425m to 109.749m. |
| 28 Mar 2024 | Visited for QA in March 2024 for Rakaia investigation |
| 09 May 2025 | Surveyed to QAR1 on 29/04/2025 NZTM Easting/Northing updated from:1520628-5154336 shifted 4m |