1. Hydrological Monitoring & Data Acquisition

• Design, installation, and operation of hydrological monitoring networks and equipment
• River flow, water level, rainfall and climate monitoring, including telemetry and data systems
• Operating in accordance with ISO and NEMS standards
• Calibration and verification of monitoring equipment to ensure data accuracy
• Collection and management of robust datasets to support environmental compliance and decision-making

2. Open Channel Flow Measurement

• Specialist expertise in flow measurement in rivers, streams, and irrigation systems
• Development of flow rating curves and flow records
• Streamflow gauging using industry-standard methodologies
• Support for water allocation, abstraction monitoring, compliance and reporting

3. Environmental Monitoring & Reporting

• Design and implementation of environmental monitoring programs
• Collection and interpretation of surface water and groundwater data
• Surface and groundwater quality sampling
• Sediment runoff and land use change studies
• Marine water quality monitoring
• Technical support for the irrigation industry including water meter verifications – Irrigation NZ 'Blue Tick' accredited
• Currently operate to ISO 1100-1 and ISO 1100-2 for operation of gauging stations and flow measurement in open channels, and ISO 748 for gaugings using current meters.

4. Rainfall & Climate Monitoring

• Installation and maintenance of rainfall and climate monitoring systems
• Data management and quality assurance
• Collection of datasets for hydrological modelling and infrastructure design

5. Hydrological Advice for Consents & Compliance

• Technical input into resource consent applications, particularly water permits and abstraction
• Hydrological data analysis
• Ongoing compliance monitoring and reporting
• Expert advice to support regulatory engagement with regional councils

OneFortyOne NZ Ltd – Paired Catchment Study, Donald Creek

Envirolink is engaged by OneFortyOne NZ (OFO) to operate hydrological and sediment monitoring equipment as part of a paired catchment study of forestry harvesting impacts at Tadmor, near Nelson. Envirolink is responsible for operation of all field equipment, maintenance, data collection and quality assurance to NEMS standards. The two-phase study aims to quantify sediment runoff impacts of different harvesting approaches, sediment-runoff mitigation methods and contribute to developing industry best practice. The $2.7 million project was established in 2020 and is funded 50:50 between OFO and NZ Ministry for Primary Industries.

Marlborough Shellfish Quality Programme – Marlborough Sounds & Golden Bay

Marlborough Shellfish Quality Programme (MSQP) is an aquaculture industry body responsible for ensuring the quality and safety of shellfish harvested for human consumption. Mussels are filter feeders and can take up contaminants present in waters where they are grown. Contamination potential is continuously monitored, with rainfall, river flow and salinity data used as proxies. Envirolink operates a network of rain gauges, river level / flow recorders, and moored monitoring buoys across the Marlborough Sounds and Golden Bay as part of MSQP's water quality monitoring programme. Envirolink also operates a near-real-time data hosting and information portal where growing area status is published and used by MSQP members to guide harvesting operations. Envirolink has been a trusted partner of MSQP in this project since 2011.

Contact Kieran Scott

Lead Hydrologist
Phone: (021) 0241 1017
[email protected]