This Technical Report (TR) provides guidance to assist with the planning and design of Hydrometric networks, to ensure a better understanding of the water cycle, and that any data are observed and collated in an effective and appropriate manner. The TR is intended for use when:- \u2022 a new network is being planned and designed; \u2022 the nature, value and extent of an existing network is being reviewed; \u2022 a redundant network is being decommissioned or modified. This is to ensure that the impacts of these changes are considered objectively, and all changes are adequately monitored and recorded. This TR covers all aspects that are considered pertinent to the evaluation. The information will be used to inform the decision-making process employed by the network\u2019s owners and operators. The objective nature of the review will ensure that all influential factors, both beneficial and otherwise, are considered. This will ensure that primary and potential alternative uses of the network are considered. It will also ensure compliance with any extant environmental legislation.<\/p>\n
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| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 4 Nomenclature 4.1 Categories 4.2 Geophysical and other restraints originating from the river basin 4.3 The need for data and information <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 4.4 Technical and economic considerations due to data capture, data processing and data archival 5 Strategic considerations 5.1 The need for hydrometric data <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 5.2 Network requirements 5.3 Existing and potential users of the catchment data <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 5.4 Water resources utilization and demand for water <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 5.5 National and international needs <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 5.6 Consideration of other hydrological monitoring networks 6 Factors affecting hydrometric design 6.1 Patterns of runoff 6.2 Catchment morphology 6.3 Winter conditions and snow melt <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 6.4 Availability of surrogate gauged catchments <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 6.5 Environmental and legislative constraints 7 Technical considerations 7.1 Use of temporary networks <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 7.2 Choice of measuring technique 7.2.1 General 7.2.2 Open channel flow measuring techniques <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 7.3 Permanent flow measuring structures 7.3.1 General <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 7.3.2 Accessibility 7.3.3 Length and quality of established data records 7.3.4 Distribution of gauging stations 7.3.5 Representative basins <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 7.3.6 Coastal floodplains and other low gradient environments 8 Methods of network design 8.1 User survey 8.2 Prioritization <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 8.3 Physiographic impacts 8.4 The use of deterministic models to inform hydrometric network design <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 8.5 Statistical techniques <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 8.6 Optimization and review <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 9 Addressing uncertainty in network design 9.1 The concept of uncertainty 9.2 Uncertainty inherent in hydrometric networks <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 10 The socio-economic importance of the network 10.1 Techniques to justify a hydrometric network \u2013 use of cost benefit analyses 10.2 Techniques to justify a hydrometric network \u2013 evaluating the strategic value of a network 10.2.1 Data requirements 10.2.1.1 Flood forecasting and warning 10.2.1.2 Water resources and water supply operation 10.2.1.3 Water resources planning 10.2.1.4 Energy production <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 10.2.1.5 Detecting climate variability and change 10.2.1.6 Flood risk management 10.2.1.7 Environmental protection and improvement 10.2.1.8 Ecosystem management 10.2.1.9 Wastewater treatment 10.2.1.10 Agriculture 10.2.1.11 Commerce and industry <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 10.2.1.12 Research 10.3 Network reviews and cost benefit analysis <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 10.4 Socio-economic costs of not having hydrometric data <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 11 Ensuring sustainability 11.1 The sustainability of the network 11.2 Carbon footprint and maintaining sustainability 11.3 The impact of climate change and change in land use <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 12 Decommissioning sites in a network <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | Annex A (informative)Typical operating costs of a hydrometric network <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Optimal design of hydrometric networks<\/b><\/p>\n |