| Well number | K38/1273 | File number | CO6C/07511 |
|---|---|---|---|
| Last known owner | Timaru District Council Water Unit | Well status | Active (exist, present) |
| Street/road | Orari Station Road | NZTM grid reference | BZ19:63315-12189 |
| Locality | Orari | NZTM X and Y | 1463315 - 5112189 |
| Location description | East of Reservoir. | Location accuracy | 2 - 15m |
| CWMS zone | Orari-Temuka-Opihi-Pareora | Use | Public Water Supply, |
| Groundwater allocation zone | Orari-Opihi | Water level monitoring | -- |
| Depth | 26.00m | Water level count | 0 |
| Diameter | 300mm | Initial water level | 7.50m below MP |
| Measuring point description | ToC | Highest water level | |
| Measuring point elevation | 81.22m above MSL (Lyttelton 1937) | Lowest water level | |
| Elevation accuracy | < 0.5 m | First reading | |
| Ground level | 0.30m below MP | Last reading | |
| Strata layers | 5 | Calc min 80% | 3.75m below MP (Estimated) |
| Aquifer name | Aquifer tests | 0 | |
| Aquifer type | Yield drawdown tests | 1 | |
| Drill date | 28 Apr 2001 | Max tested yield | 27 l/s |
| Driller | Washington Drilling and Exploration | Drawdown at max tested yield | 8 m |
| Drilling method | Rotary Rig | Specific capacity | 3.25 l/s/m |
| Casing material | STEEL | Last updated | 29 Jun 2023 |
| Pump type | Last field check | 12 Jan 2016 | |
| Water use data | No |
Screens
| Screen no. | Screen type | Top (m) | Bottom (m) | Slot size (mm) | Slot length (mm) | Diameter (mm) | Leader length (mm) |
|---|---|---|---|---|---|---|---|
| 1 | Stainless steel | 19.2 | 25.2 |
Step tests
| Step test date | Step | Yield | Yield GPM | DrawDown | Step duration |
|---|---|---|---|---|---|
| 28 Apr 2001 | 1 | 26.6 | 351.0717 | 8.18 | 9.25 |
Comments
| Comment date | Comment |
|---|---|
| 21 Sep 2009 | Gridref changed from: K38:7325-7382 |
| 08 Aug 2013 | water usage is determined by a calculation of water metered into the reservoir against water measured out of the reservoir. |
| 18 Jan 2016 | Visited this site but was unable to access the wells due to the fence. Location is confrimed as correct. From CDWS field QA summer 2015/2016. Other CDWS and well details updated where required. Surrounding landuse is crop farming, fairy farming and sheep and horse grazing. |
| 10 Jan 2023 | Reference Level updated using LiDAR imagery in Dec 2022. The existing RL was 80.01 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 80.866m to 81.223m. |