Rangitata Diversion Race Management Ltd

What Rangitata Diversion Race Management Ltd does

Rangitata Diversion Race Management Ltd (RDRML) is a user-owned New Zealand water conveyance company that operates and maintains the Rangitata Diversion Race (RDR), a 67km gravity-fed canal stretching from the Rangitata River at Klondyke to the Rakaia River at Highbank across Mid Canterbury. Incorporated on 1 October 1990 when the New Zealand government transferred ownership of the RDR to a user-owned limited liability company, RDRML serves four anchor shareholders — MHV Water (a farmer-owned cooperative irrigating 58,000+ hectares at ~23% of RDR water), Ashburton Lyndhurst Irrigation Limited (pressurised pipe irrigation across close to 30,000ha at ~10%), Contact Energy (operating the Highbank and Montalto power stations at 94 GWh and 12 GWh respectively), and the Ashburton District Council (~2% for stockwater) — together with secondary users Barrhill Chertsey Irrigation Ltd and Cumberland Dairy Farm Limited.

The company's core technical asset is a single integrated infrastructure system: the 67km canal, 9 syphons, 61 bridges and 90+ culverts, conveying 28–36 cumecs of water under gravity. Operations are enabled by a SCADA (Supervisory Control and Data Acquisition) system installed in 2010 for remote monitoring and control, and a NZ$18 million fish exclusion facility commissioned in May 2022 that uses 2mm wedgewire screens and an innovative bypass capture channel. RDRML holds over 40 resource consents from Environment Canterbury, including primary diversion consents for 30.7 cumecs from the Rangitata River and 7.1 cumecs from the Hakatere/South Ashburton River.

RDRML generates revenue through recurring, contractually agreed water conveyance fees paid by shareholders and water users for irrigation, hydro-generation, stockwater supply and — via the Hekeao/Hinds Water Enhancement Trust partnership — Managed Aquifer Recharge. The company operates with a lean team of 8–10 staff, is governed by a board representing each major shareholder, and supports approximately $612 million in regional GDP and 3,400+ full-time equivalent jobs across Mid Canterbury and the wider Canterbury region.

Name

Rangitata Diversion Race Management Ltd

Legal name

Rangitata Diversion Race Management Limited

Website

https://rdrml.co.nz

Company type

Private

Founded year

1990

Operating status

Operating

Headcount range

1–10 employees

Short description

Rangitata Diversion Race Management Ltd is a user-owned New Zealand water conveyance company operating a 67km gravity-fed canal that delivers irrigation water, hydro-generation supply, and stockwater to farmer cooperatives, Contact Energy, and Ashburton District Council across Mid Canterbury.

Ownership category

akta.pro rank

Product category

Water Conveyance Infrastructure Services

NAICS

Water Supply and Irrigation Systems (221310), Water, Sewage and Other Systems (2213)

SIC

Water Supply (4941)

akta.pro primary industry

Raw Water Conveyance & Transmission (Aqueducts, Mains, Pumping Stations) (EUANAAAB)

akta.pro secondary industry

Pipes, Tubing & Conveyance Infrastructure (Mainlines, Laterals, Hoses) (AFAAACAG)

Keywords

• Water conveyance services
• Irrigation infrastructure
• Gravity-fed canal
• Hydroelectric water delivery
• Stockwater supply

Headquarters

HQ city

Ashburton

HQ country

New Zealand

HQ region

Oceania

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Operations, Personnel, Infrastructure, Technology or R&D

Revenue model

1. Water Conveyance Services: RDRML operates and maintains the Rangitata Diversion Race for the benefit of shareholders and customers who utilise water for irrigation, hydro-generation, supply of stockwater and environmental enhancement. Revenue generated through water supply agreements with irrigation companies and other water users.
2. Hydro-generation Support: Water delivery to power stations operated by Contact Energy (Highbank and Montalto) for renewable energy generation.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Rangitata Diversion Race Management Ltd operates and maintains the Rangitata Diversion Race (RDR), a 67km gravity-fed canal system that diverts water from the Rangitata River to the Rakaia River in Mid Canterbury, New Zealand. The company conveys water to shareholder irrigation companies for farmland irrigation (over 100,000 hectares), to Contact Energy's power stations for hydroelectric generation, to the local district council for stockwater supply, and to the Hekeao/Hinds Water Enhancement Trust for Managed Aquifer Recharge.

Product overview

Rangitata Diversion Race Management Ltd operates the Rangitata Diversion Race (RDR), a 67km gravity-fed canal system that is the core infrastructure product. The system diverts water from the Rangitata River for multi-purpose use including irrigation (serving MHV Water, ALIL, and other users), hydro-generation (via Highbank and Montalto power stations operated by Contact Energy), stockwater supply, and Managed Aquifer Recharge. Supporting infrastructure includes a SCADA system for remote monitoring/operation and a $18m Fish Screen facility commissioned in 2022 to protect fish populations.

Differentiator

Problem solved

Functional benefit

Products and services

• Rangitata Diversion Race (RDR) Water Conveyance Service A 67km gravity-fed canal water conveyance service that diverts water from the Rangitata River at Klondyke to the Rakaia River at Highbank. The service delivers water to shareholder irrigation companies (MHV Water, ALIL, BCIL), to Contact Energy's hydroelectric power stations, to Ashburton District Council for stockwater, and to the Hekeao/Hinds Water Enhancement Trust for Managed Aquifer Recharge. It supports 100,000+ hectares of irrigated farmland across Mid Canterbury.
• Fish Screen Facility A $18 million state-of-the-art fish exclusion facility commissioned in May 2022 and located 1.6km below the main Rangitata River intake. It uses 2mm wedgewire screens to prevent fish from entering the RDR canal while maintaining appropriate approach and sweep velocities. Features an innovative fish capture facility in a bypass channel for health testing, ensuring fish scale loss is indistinguishable from wild salmon in the river. Operates as part of RDRML's regulatory compliance under Environment Canterbury resource consents.

Quantifiable outcome

• Supports $612 million in regional GDP annually
• +4 more outcomes

Named customers6 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Twelve partnerships are on record, tiered core and minor.

• Contact Energy LimitedcoreStrategic or Co-development PartnerContact Energy operates Montalto (12 GWh) and Highbank (94 GWh) power stations on the RDR. These are the only two power stations on the scheme and are critical to hydrogeneration revenue. Contact operates 37 generation sites nationwide across geothermal, hydro and thermal assets.
• MHV Water LimitedcoreStrategic or Co-development PartnerFarmer-owned cooperative delivering water for irrigation through open race system for over 58,000 hectares. Largest single user of RDR water at approximately 23%. MHV Water representative Jen Crawford serves as RDRML Chair.
• Ashburton Lyndhurst Irrigation Limited (ALIL)coreStrategic or Co-development PartnerFarmer-owned cooperative delivering pressurised pipe irrigation to close to 30,000ha of Mid-Canterbury land. Uses approximately 10% of RDR water. Director Phil Lowe represents ALIL on RDRML Board.
• Ashburton District CouncilcoreStrategic or Co-development PartnerCouncil draws stockwater from RDR for district supply and utilises approximately 2% of RDR water. Director Richard Wilson represents ADC on RDRML Board.
• Barrhill Chertsey Irrigation Ltd (BCIL)coreStrategic or Co-development PartnerBCIL utilises Rakaia River water consent, delivered to RDR via Manawa Energy's Highbank pumping facility. Expanded irrigation supply network with multiple offtakes along RDR. Significant operational and management relationship.
• Manawa Energy LtdminorStrategic or Co-development PartnerOperates Highbank pump station (commissioned 2011) pumping water from Rakaia River into RDR, primarily for BCIL. Generator replacement outage at Highbank in September 2024.
• Cumberland Dairy Farm LimitedminorStrategic or Co-development PartnerLarge dairying enterprise at Klondyke at top of RDR scheme. Agreement to convey water diverted from Rangitata River under CDFL's resource consent (1.5 cumecs) to their storage pond 2.5km downstream of RDR intake.
• Hekeao/Hinds Water Enhancement Trust (HHWET)coreStrategic or Co-development PartnerCommercial agreement with RDRML for use of RDR to convey water to various locations for Managed Aquifer Recharge (MAR). NZ's largest managed groundwater rehabilitation project, transitioned to permanent operational phase from 2016 pilot.
• Te Runanga o ArowhenuacoreStrategic or Co-development PartnerMana whenua partnership. Access to water is acknowledged as a privilege and responsibility. Common goal that water provides for future generations sustainably. Arowhenua whanau offered opportunities during RDR construction era.
• Environment Canterbury (ECan)coreStrategic or Co-development PartnerRegulatory authority for Canterbury region with overall responsibility for freshwater access and use, including issuing resource consents and monitoring compliance. RDRML holds over 40 resource consents through ECan.
• Department of Conservation (DOC)minorStrategic or Co-development PartnerLong-standing relationship including access to DOC walkway situated above RDR intake at Klondyke.
• Central South Island Fish and Game CouncilcoreStrategic or Co-development PartnerFish & Game has been involved in RDR operation for many years providing fish expertise. Assisted with testing and improving fishscreen performance after BAFF installation in 2009 and continues support with new fish screen commissioned 2022.

Scale indicators8 records

Recent moves7 records

Expansion highlights4 records

Regional players

• Goulburn-Murray Water: Victoria's largest irrigation infrastructure operator managing the Murray-Darling system, including gravity channels, pipelines, and storages for agricultural water users. Comparable regional bulk water infrastructure operator serving irrigation cooperatives, but in Australia.
• Watercare Services Limited: Largest water and wastewater utility in NZ, serving Auckland. Comparable as a regulated NZ water infrastructure operator with consented water take, treatment, and large-scale pipeline distribution assets, although focused on urban potable water rather than irrigation.
• SunWater Limited: Queensland Government-owned bulk water infrastructure operator managing dams, weirs, and irrigation distribution channels. Comparable as a public-purpose bulk water conveyance utility serving irrigation customers, but operating in Australia rather than NZ.

Others

• Contact Energy Limited: NZ's largest renewable electricity generator and RDRML's hydro-generation partner, operating the Montalto (12 GWh) and Highbank (94 GWh) power stations on the Rangitata Diversion Race. Relevant peer as a contracted counterparty and as a comparable NZ hydro generation business model.

Direct peers

• Opuha Water Limited: Operates the Opuha Dam and associated water conveyance infrastructure in South Canterbury for irrigation, hydrogeneration and stockwater supply. Directly comparable to RDRML as a multi-purpose regional water infrastructure operator with hydroelectric generation and irrigation customers.
• MHV Water Limited: Largest single shareholder/customer of RDRML (~23% of RDR water), formed in 2017 from the merger of Mayfield Hinds and Valetta irrigation schemes. Operates open race and piped irrigation networks serving ~58,000 hectares. Comparable as a downstream irrigation distributor reliant on RDRML bulk conveyance.
• Ashburton Lyndhurst Irrigation Limited (ALIL): Farmer-owned cooperative delivering pressurised pipe irrigation to ~30,000 hectares in Mid Canterbury, using ~10% of RDRML water. Closely comparable downstream irrigation operator sharing the same Mid Canterbury customer base and water source.
• Lower Waitaki Irrigation Company: Farmer-owned cooperative operating a major South Canterbury irrigation scheme fed by the Waitaki hydro system. Comparable to RDRML in user-owned cooperative structure and bulk water conveyance for agricultural users in the same Canterbury region.
• Central Plains Water Limited: Operates a large-scale irrigation water conveyance scheme in Canterbury, NZ, distributing water from the Rakaia River to shareholders via canals, pipelines, and storage. Closely comparable to RDRML in business model (user-owned bulk water conveyance for irrigation), regulatory regime (Environment Canterbury consents), and customer base (Canterbury farmer cooperatives).

Broad incumbents

• Meridian Energy Limited: NZ's largest renewable electricity generator, including significant hydroelectric assets in the Waitaki and Waikato systems. Comparable as a large-scale NZ operator that uses bulk water conveyance infrastructure for power generation, though broader in scope than RDRML.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/rangitata-diversion-race-management-ltd

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Rangitata Diversion Race Management Ltd