rain gauge Articles

  • Assessment of rain-gauge networks using a probabilistic GIS based approach

    Rain-gauge networks provide estimates of areal rainfall as a crucial input for hydrological applications. Hence, it is important to quantify the performance of a rain-gauge network and evaluate the contribution of each rain-gauge to the overall accuracy of areal rainfall estimation at basin scale. This paper evaluates the performance and augmentation of a rain-gauge network in a large basin in ...


    By IWA Publishing

  • Radar–raingauge data combination techniques: a revision and analysis of their suitability for urban hydrology

    The applicability of the operational radar and raingauge networks for urban hydrology is insufficient. Radar rainfall estimates provide a good description of the spatiotemporal variability of rainfall; however, their accuracy is in general insufficient. It is therefore necessary to adjust radar measurements using raingauge data, which provide accurate point rainfall information. Several ...


    By IWA Publishing

  • Rain Gauge Fixed with 12 V Regulator

    A friend came to me with a curious problem regarding the research weather stations he maintains. The Geonor rain gauges were experiencing glitches. Some of his stations exhibited only occasional problems, and others were failing almost daily. In the plot below, the rain gauge output is in blue. It should be a steady, increasing line representing the weight of the accumulated precipitation. ...


    By Dyacon, Inc.

  • Comparison of different radar-raingauge rainfall merging techniques

    The improvement of precipitation estimation with the use of radar-raingauge rainfall merging techniques is influenced by several factors, such as topography, storm types, raingauge network density for adjustment, data quality and the rainfall accumulation time. However, the influence of the raingauge network configuration on the performance of radar-raingauge merging methods is often ignored. ...


    By IWA Publishing

  • Commercial microwave links instead of rain gauges: fiction or reality?

    Commercial microwave links (MWLs) were suggested about a decade ago as a new source for quantitative precipitation estimates (QPEs). Meanwhile, the theory is well understood and rainfall monitoring with MWLs is on its way to being a mature technology, with several well-documented case studies, which investigate QPEs from multiple MWLs on the mesoscale. However, the potential of MWLs to observe ...


    By IWA Publishing

  • Preventing rain water flooding case study

    SmartScan 50 helps preventing rain water flooding by providing an efficient level measurement solution in a pop. 1M city. The municipality has been struggling for years with heavy flooding of rain water during winter time that damaged large parts of the city and caused distress to its residents. As a result, a long drainage pipe was laid between the city's shore and the flooded parts. This huge ...

  • Evaluation of a near-real time NEXRAD DSP product in evolution of heavy rain events on the Upper Guadalupe River Basin, Texas

    This study evaluates the Next Generation Weather Radar (NEXRAD) Digital Storm-Total Precipitation product (DSP) by analyzing 30 rain events on the Upper Guadalupe River Basin, Texas, from September 2006 to May 2007. The DSP product provides relatively accurate information on the evolution of rain events at high spatial and temporal resolutions in near-real time. This is particularly important ...


    By IWA Publishing

  • Modeling probabilistic radar rainfall estimation at ungauged locations based on spatiotemporal errors which correspond to gauged data

    This study presents a probabilistic radar rainfall estimation (PRRE) model to quantify the reliability and accuracy of the resulting radar rainfall estimates at ungauged locations from a radar-based quantitative precipitation estimation (QPE) model. This model primarily estimates the quantiles of the radar rainfall errors at ungauged locations by incorporating seven spatiotemporal variogram ...


    By IWA Publishing

  • Scottish Environment Protection Agency (SEPA), 2004 - 2005 case study

    Supply and installation of flood warning system Supply of 12 no. Hawk XT telemetry loggers for use with tipping-bucket rain-gauges plus supply and installation of 6 no. telemetered flow gauges to the SEPA west area as part of a flood warning instrumentation project. Each flow gauge was comprised of a Teledyne RDi Channelmaster H-ADCP with a Hawk XT outstation.  The Isodaq FEP6 telemetry ...


    By Hydro-Logic Services

  • SEPA Logger Supply

    The Isodaq Division have completed delivery of 250 Hawk XT telemetry data logging outstations to the UK's environmental regulator for Scotland, SEPA (Scottish Environmental Protection Agency) as part of a asset replacement project to upgrade 400 obsolete battery-powered outstations deployed at permament flow gauging, flood warning and automatic rain-gauge sites across the whole of Scotland. After ...

  • Low Cost Flood Warning Solution

    Scottish Environment Protection Agency (SEPA) Supply and installation of flood warning system Supply of Hawk XT telemetry loggers for use with tipping-bucket rain-gauges plus supply and installation of telemetered flow gauges to the SEPA west area as part of a flood warning instrumentation project. Each flow gauge was comprised of a Teledyne RDi Channelmaster H-ADCP ...

  • Grille Monitoring in Scottish Borders

    Hydro-Logic was appointed to supply 4 trash screen monitors to the Scottish Borders Council. They were installed to monitor the level upstream of the screens and to provide alarms when the level reached a set threshold. This alarm was to be used by the council to indicate a build up of debris in front of the screen that would have created a flood risk potential. The alarms are transmitted along ...

  • Analysis of drought characteristics over Luanhe River basin using the joint deficit index

    In order to describe the overall drought status objectively, a copula-based joint deficit index (JDI) was adopted for analyses of drought characteristics in Luanhe River basin. Monthly precipitation data from 1958 to 2011 selected from 26 rain-gauge stations were used for calculating the JDI. The JDI, which encompasses multiple deficit statuses over time ...


    By IWA Publishing

  • Evaluating the accuracy of C- and X-band weather radars and their application for stream flow simulation

    This paper investigates the accuracy of rainfall estimates from C- and X-band weather radars and their application for stream flow simulation. Different adjustment procedures are applied to raw radar estimates using gauge readings from a network of 12 raingauges. The stream flow is simulated for the 48.17 km2 Molenbeek/Parkbeek catchment located in the Flemish region of Belgium based on a lumped ...


    By IWA Publishing

  • Assessment of a 1-hour gridded precipitation dataset to drive a hydrological model: a case study of the summer 2007 floods in the Upper Severn, UK

    In this study a gridded hourly 1-km precipitation dataset for a meso-scale catchment (4,062 km2) of the Upper Severn River, UK was constructed using rainfall radar data to disaggregate a daily precipitation (rain gauge) dataset. The dataset was compared to an hourly precipitation dataset created entirely from rainfall radar data. Results found that when assessed against gauge readings and as ...


    By IWA Publishing

  • Comparing the impact of time displaced and biased precipitation estimates for online updated urban runoff models

    When an online runoff model is updated from system measurements, the requirements of the precipitation input change. Using rain gauge data as precipitation input there will be a displacement between the time when the rain hits the gauge and the time where the rain hits the actual catchment, due to the time it takes for the rain cell to travel from the rain gauge to the catchment. Since this time ...


    By IWA Publishing

  • Spatial and temporal patterns of remotely-sensed and field-measured rainfall in southern California

    Quantification of spatial and temporal patterns of rainfall is an important step toward developing regional hydrological models. However, traditionally used rain gauge data are sparse and do not always provide adequate spatial representation of rainfall. In this study, we evaluated the daily 1-degree resolution remotely-sensed atmospheric precipitation data provided by Global Precipitation ...

  • Evaluation of CMPA precipitation estimate in the evolution of typhoon-related storm rainfall in Guangdong, China

    The merged precipitation data of Climate Prediction Center Morphing Technique and gauge observations (CMPA) generated for continental China has relatively high spatial and temporal resolution (hourly and 0.1°), while few studies have applied it to investigate the typhoon-related extreme rainfall. This study evaluates the CMPA estimate in quantifying the typhoon-related extreme rainfall using a ...


    By IWA Publishing

  • Bradford Metropolitan Borough Council

    Installation of a tipping bucket rain gauge and telemetry system Hydro-Logic was contracted by BMBC to supply and install a rainfall telemetry system for real-time monitoring including intensity alarm management for an urbanised catchment mainly in Keighley, Yorkshire as part of an Urban Flooding Research Study. The network of 16 tipping bucket rain gauges comprised a Hawk XT GSM ...

  • Bradford Metropolitan Council case study

    Bradford Metropolitan Borough Council, 2005 - 2006 Installation of a tipping bucket rain gauge and telemetry system Hydro-Logic was contracted by BMBC to supply and install a rainfall telemetry system for real-time monitoring including intensity alarm management for an urbanised catchment mainly in Keighley, Yorkshire as part of an Urban Flooding Research ...


    By Hydro-Logic Services

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