| Well number | L36/0756 | File number | |
|---|---|---|---|
| Last known owner | Hall, T.C. & Henderson, D. | Well status | Active (exist, present) |
| Street/road | RAKAIA TAUMUTU RD | NZTM grid reference | BY22:37811-49127 |
| Locality | Southbridge | NZTM X and Y | 1537811 - 5149127 |
| Location description | 50m from road, 7m from driveway | Location accuracy | 2 - 15m |
| CWMS zone | Selwyn - Waihora | Use | Domestic Supply, |
| Groundwater allocation zone | Little Rakaia | Water level monitoring | -- |
| Depth | 12.10m | Water level count | 0 |
| Diameter | 51mm | Initial water level | 5.40m below MP |
| Measuring point description | Highest water level | ||
| Measuring point elevation | 30.25m above MSL (Lyttelton 1937) | Lowest water level | |
| Elevation accuracy | < 0.5 m | First reading | |
| Ground level | 0.00m above MP | Last reading | |
| Strata layers | 5 | Calc min 80% | 7.81m below MP (Estimated) |
| Aquifer name | Aquifer tests | 0 | |
| Aquifer type | Unknown | Yield drawdown tests | 1 |
| Drill date | 07 Mar 1991 | Max tested yield | 4 l/s |
| Driller | McMillan Drilling Ltd | Drawdown at max tested yield | 0 m |
| Drilling method | Rotary/Percussion | Specific capacity | 25.27 l/s/m |
| Casing material | STEEL | Last updated | 29 Jun 2023 |
| Pump type | Centrifugal (Surface) | Last field check | |
| Water use data | No |
No screen data for this well
Step tests
| Step test date | Step | Yield | Yield GPM | DrawDown | Step duration |
|---|---|---|---|---|---|
| 07 Mar 1991 | 1 | 3.79 | 50.0211143 | 0.15 | 60 |
Comments
| Comment date | Comment |
|---|---|
| 08 Nov 2001 | Gridref changed from: L36:4771-1081. Orig drilled 125mm, pump test at this diamter, withdrawn and 2" installed. |
| 10 Jan 2023 | Reference Level updated using LiDAR imagery in Dec 2022. The existing RL was 28.22 and the QAR RL was 3. The method of calculating the original RL was: Interpolated DTM <2.5 m. 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 29.914m to 30.248m. |