River Glatt

Description

Along river Glatt and river Chriesbach, spot samples were taken in an approximately weekly rhythm at five different stations (excelsheet) from June 1972 until April 1977(map)

In those samples physical, geochemical, anthropogenic parameters and heavy metals were measured.(analytical methods)

Aim

This project served as a pilot project for new extensive chemical examinations of flowing waters with regard to:

• sample taking
• sample preservation
• chemical analysis
• data preparation
• data storage
• data analysis
• assessment of the water bodies

Apart from this, strongly polluted water from river Glatt was analyzed.

Data Files

• Glatt-Rheinsfelden.xlsx
• Glatt-Opfikon.xlsx
• Glatt-Niederglatt.xlsx
• Glatt-Glattfelden.xlsx
• Glatt-Faellanden.xlsx
• Glatt-Aubruecke_Hagenholz.xlsx
• Chriesbach-Duebendorf.xlsx

Structure of the Data Files

• measured data
• loads
• annual average of concentrations and loads
• graphs of time series of concentrations and loads

Data Control

comparing:

• calculated anions / calculated cations
• conductivity / total hardness
• calculated conductivity / measured conductivity
• total hardness / (sulfate + alkalinity)
• Na/K, Na/Cl
• nitrate / total nitrogen, (total nitrogen - nitrate) / suspended solids (where: total nitrogen = nitrite + nitrate + kjeldahl nitrogen)
• DRP / total phosphor, (total phosphor - DRP) / suspended solids
• DOC / TOC, (TOC – DOC) / suspended solids
• maxima and minima, annual averages of concentrations and ratios compared with those of former years
• temperatures and discharge proportions
• plausibility of extreme values. Incorrect values were eliminated.

Publication List

• Zobrist J. et al. (2011): 77 Jahre Untersuchungen an der Glatt. gwa 9, 315-327 (pdf) This publication contains furthermore all important constructions works which have been accomplished at river Glatt.
• Zobrist J. et al. (1976): Charakterisierung des chemischen Zustandes der Glatt. gwa 56, 97-114 (pdf)

Responsible Persons

Jürg Zobrist as project leader, Joan Davis for data analysis and Ursula Schoeneberger for data storage.