Healthy estuary and rivers of the city [electronic resource] : water quality and ecosystem health monitoring programme of Ihutai : water quality of the Avon and Heathcote Rivers : summary report on data collected in 2007 / report prepared by Michele Stevenson ; data collected by Christchurch City Council.

By: Stevenson, Michelle.
Contributor(s): Canterbury (N.Z.). Environment Canterbury.
Material type: materialTypeLabelBookSeries: Technical report / Environment Canterbury ; no. R08/43.Publisher: Christchurch [N.Z.] : Environment Canterbury, 2008Description: 1 electronic document ([15] p.) : col. ill., col. maps, PDF file.ISBN: 9781869378387.Report number: R08/43Subject(s): CANTERBURY | FRESH WATER | STANDARDS | RIVERS | HEAVY METALS | DISSOLVED OXYGEN | WATER QUALITY | AMMONIUM NITRATE | BIOCHEMICAL OXYGEN DEMAND | NITRATES | NITROGEN COMPOUNDS | SUSPENDED SOLIDS | PHOSPHORUS | TURBIDITY | ZINC | COPPER | LEAD | ESCHERICHIA COLI | CADMIUM | MERCURY | WATER POLLUTION | NEW ZEALAND | AVON-HEATHCOTE ESTUARY | AVON RIVER | HEATHCOTE RIVERAdditional physical formats: Healthy estuary and rivers of the city : water quality and ecosystem health monitoring programme of Ihutai : water quality of the Avon and Heathcote Rivers : summary report on data collected in 2007 Holdings: Index record, see series title. Online resources: Click here to access online Summary: The Healthy Estuary and Rivers of the City: Water quality and ecosystem health monitoring programme of Ihutai was written in 2006. It includes monitoring programmes for the four environmental values. This report summarises data collected in 2007 from the Avon and Heathcote rivers as part of Value B - Healthy Ecosystems - water quality. Other parts of this value include water quality of the estuary and beyond, river habitat and its biota, and the soft sediments of estuary and tidal reaches. These aspects are covered by separate summary reports. The Avon and Heathcote rivers drain a large part of the city of Christchurch and flow to the Avon- Heathcote Estuary/Ihutai. Both rivers are spring-fed and slow-flowing and have a number of tributaries that include both natural streams and man-made drains. The quality of the water in these rivers is influenced by both the quality of groundwater in the shallow aquifers that feed the springs and the quality of stormwater that runs off the land into the rivers and tributaries when it rains. Stormwater quality is strongly influenced by land use in the river catchment. Other factors that can affect water quality in these urban rivers include catchment geology, point source discharges from industrial sites, infrequent sewage overflows, and the presence of large numbers of waterfowl. Good water quality is required for the plants and animals that live in the water, and on the bed of the rivers, to function normally. For the water to be of good quality it should not contain unnaturally high concentrations of nutrients or sediment and must contain sufficient oxygen for living things. High concentrations of nutrients and sediment and low concentrations of oxygen can be detrimental to the plants and animals that live in the water, and on the river bed. Some contaminants from the urban environment, such as ammonia and heavy metals, can be toxic to aquatic life even at low concentrations. Water quality is monitored1 at sites on both the Avon and Heathcote rivers as well as some of their tributary streams in the upper parts of their catchments. This is a summary report of the water quality data collected at these sites and an overall evaluation of their water quality in 2007. This is the first annual summary report to be produced. A report including more detailed analysis, such as analysis of trends over time, will be produced following five years of data collection at these sites. - Intro.
Tags from this library: No tags from this library for this title. Log in to add tags.
Item type Current location Call number Copy number Status Date due Barcode
ABSTRACT ABSTRACT NIWA BIBLIOGRAPHY
1 Available 144017-1001

"June 2008"

Title from PDF t.p. (viewed on Mar. 3, 2009).

Includes bibliographical reference.

The Healthy Estuary and Rivers of the City: Water quality and ecosystem health monitoring programme of Ihutai was written in 2006. It includes monitoring programmes for the four environmental values. This report summarises data collected in 2007 from the Avon and Heathcote rivers as part of Value B - Healthy Ecosystems - water quality. Other parts of this value include water quality of the estuary and beyond, river habitat and its biota, and the soft sediments of estuary and tidal reaches. These aspects are covered by separate summary reports. The Avon and Heathcote rivers drain a large part of the city of Christchurch and flow to the Avon- Heathcote Estuary/Ihutai. Both rivers are spring-fed and slow-flowing and have a number of tributaries that include both natural streams and man-made drains. The quality of the water in these rivers is influenced by both the quality of groundwater in the shallow aquifers that feed the springs and the quality of stormwater that runs off the land into the rivers and tributaries when it rains. Stormwater quality is strongly influenced by land use in the river catchment. Other factors that can affect water quality in these urban rivers include catchment geology, point source discharges from industrial sites, infrequent sewage overflows, and the presence of large numbers of waterfowl. Good water quality is required for the plants and animals that live in the water, and on the bed of the rivers, to function normally. For the water to be of good quality it should not contain unnaturally high concentrations of nutrients or sediment and must contain sufficient oxygen for living things. High concentrations of nutrients and sediment and low concentrations of oxygen can be detrimental to the plants and animals that live in the water, and on the river bed. Some contaminants from the urban environment, such as ammonia and heavy metals, can be toxic to aquatic life even at low concentrations. Water quality is monitored1 at sites on both the Avon and Heathcote rivers as well as some of their tributary streams in the upper parts of their catchments. This is a summary report of the water quality data collected at these sites and an overall evaluation of their water quality in 2007. This is the first annual summary report to be produced. A report including more detailed analysis, such as analysis of trends over time, will be produced following five years of data collection at these sites. - Intro.

Index record, see series title.

Te Puna

There are no comments on this title.

to post a comment.

Powered by Koha