Freshwater

A tool to support decision-making on the suitability of RotoTurf for your waterbody

A tool to select aquatic plant species that will support restoration of degraded freshwater.

Maintaining good water quality is important for healthy ecosystems and healthy humans. NIWA are experts in providing and servicing the water quality monitoring equipment you need to effectively monitor water quality in lakes, streams, coastal waters and estuaries.

An easy-to-use system for recording instream structures and assessing their likely impact on fish movements and river connectivity.

An interactive webtool to support barrier prioritisation and fish passage environmental reporting. 

NIWA's Urban Runoff Quality Information System (URQIS) provides planners, engineers and researchers with information about the quality of stormwater from different locations and landuses and under different flow conditions.

The New Zealand Freshwater Fish Database (NZFFD) contains over 50,000 freshwater fish observations from across New Zealand from 1901 to the present.

NIWA’s Stream Health Monitoring Assessment Kit (SHMAK) gives land owners, iwi, school and community groups simple, scientifically-sound tools and resources to monitor the ecological health of New Zealand’s streams.

NIWA is active in a broad range of eDNA topics and can provide expert advice on applications and expected outcomes.

Report: Trends analysis for selected indicators of Waikato River health and wellbeing 2010-2019

The condition of many NZ lakes is under threat from land-use changes and the invasion of alien aquatic plants.

Blooms of hazardous cyanobacteria (blue-green algae) in rivers, lakes and reservoirs can cause problems for both animal and human health.