| Well number | L37/0728 | File number | CO6C/12182 |
|---|---|---|---|
| Last known owner | Quintag Holdings Limited | Well status | Active (exist, present) |
| Street/road | LE BRETONS ROAD | NZTM grid reference | BY21:07495-34749 |
| Locality | Ashburton | NZTM X and Y | 1507495 - 5134749 |
| Location description | SE CORNER RS27227 - NEAR LE BT RD BNDRY | Location accuracy | 2 - 15m |
| CWMS zone | Ashburton | Use | Irrigation, |
| Groundwater allocation zone | Ashburton Lyndhurst | Water level monitoring | -- |
| Depth | 41.20m | Water level count | 0 |
| Diameter | 300mm | Initial water level | 13.20m below MP |
| Measuring point description | ToC | Highest water level | |
| Measuring point elevation | 64.85m above MSL (Lyttelton 1937) | Lowest water level | |
| Elevation accuracy | < 0.5 m | First reading | |
| Ground level | 0.35m below MP | Last reading | |
| Strata layers | 5 | Calc min 80% | 15.75m below MP (Estimated) |
| Aquifer name | Aquifer tests | 0 | |
| Aquifer type | Unknown | Yield drawdown tests | 1 |
| Drill date | 24 Jan 1997 | Max tested yield | 51 l/s |
| Driller | McMillan Drilling Ltd | Drawdown at max tested yield | 13 m |
| Drilling method | Rotary Rig | Specific capacity | 3.83 l/s/m |
| Casing material | STEEL | Last updated | 05 Jul 2023 |
| Pump type | Unknown | Last field check | 25 Jan 2007 |
| 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 | 38.2 | 41.2 |
Step tests
| Step test date | Step | Yield | Yield GPM | DrawDown | Step duration |
|---|---|---|---|---|---|
| 24 Jan 1997 | 1 | 51 | 673.107361 | 13.3 | 4 |
Comments
| Comment date | Comment |
|---|---|
| 26 Jan 2007 | Gridref changed from: L37:1746-9644. Site visted by JamesB for Well Quality Assessment, January 07. Hour meter read 3213880hrs |
| 10 Jan 2023 | Reference Level updated using LiDAR imagery in Dec 2022. The existing RL was 67.31 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 64.484m to 64.849m. |