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NRA Severn-Trent 5 NRA Severn-Trent Region HYDROMETRIC REPORT AND CATALOGUE 1991 National Information Centre The Environment Agency Rio House Waterside Drive Aztec West BRISTOL BS12 4UD Due for re tu rn En v ir o n m e n t Agency NATIONAL LIBRARY & information service HEAD OFFICE Rio House. Waterside Drive. Aztec West. Almondsbury. Bristol BS32 4UD HYDROMETRIC REPORT & CATALOGUE 1991 NRA National Rivers Authority JULY 1992 Severn-Trent Region Water Resources Section Hydrometric Data Group Sapphire East Streetsbrook Road Solihull B91 1QT Telephone: 021-711-2324 National Rivev- Authority Information O stre Head Offico ENVIRONMENT AGENCY ^^idSS No ............... 099796 Accozz\c'\ 'o IfcCUft............ FOREWORD The 1991 Hydrometric Report and Catalogue is one of a series of annual hydrometric summaries produced by the NRA Severn-Trent Region. It contains a short hydrometric review ofthe year 1991 with a range of data summaries at key sites. The hydrometric catalogue section contains listings of the river level andflow stations, groundwater boreholes, rainfall gauges and climate stations maintained by the region. INTRODUCTION The 1991 Hydrometric Report and Catalogue represents the third published since the National Rivers Authority assumed responsibility for hydrometric data in the Severn- Trent region. The report is designed to give an insight into the type and availability of data that can be obtained from established measurement stations. The catalogue section provides comprehensive lists of these stations with maps to identify their locations. The production of the report and the data it contains represents a combined effort, both from the field hydrometric staff who maintain the stations and undertake vital calibrations, and the staff within the Hydrometric & Data section where the data is processed and archived for future use. The co-ordination of the 1991 report has been supervised by Andrew Pimperton, and any suggestions or errors should be passed to Andrew or the Data section staff, at Sapphire East, Solihull. It should be noted that this report can only show'a sample of the data currently available and that it would be unrealistic to summarise all of the data collected during the year. Requests for data that is not included should be directed to the staff of the Data section at Solihull. As awareness increases for the need to manage water resources in times of drought, and to provide improved forecasts in times of flood, the requirement for accurate hydrometric information becomes ever more essential . This report is produced to support these and other functions of the NRA, by giving an indication of the available data, and to act as a reference for the year 1991. TABLE OF CONTENTS ^ Page No. Foreword ii Introduction iii Table of Contents iv List Of Tables v List Of Figures vi HYDROMETRIC SUMMARY AND DATA FOR 1991 1. HYDROMETRIC REVIEW 1 1.1 Monthly Hydrological Summary 1.2 Event of the 20/21 st December 1991 1.3 Hydrometric Facts 1991 2. CURRENT METER GAUGINGS 8 2.1 Low Flow Survey Tables 3. RIVER FLOW DATA 25 3.1 Monthly Mean Flows For Selected Sites 3.2 Annual Hydrographs And Flow Duration Curves 4. RAINFALL .......... 46 4.1 Daily Rainfall Totals For Selected Sites 4.2 Areal Average Rainfall For 1991 5. GROUNDWATER 60 5.1 Groundwater Hydrographs For 1991 6. MISCELLANEOUS DATA 68 6.1 Soil Moisture And Evapotranspiration 6.2 Water Temperature SITE CATALOGUES A. RIVER LEVEL AND FLOW STATIONS Catalogue 3 B. RAINFALL INTENSITY STATIONS Catalogue 10 C. DAILY RAINFALL STATIONS Catalogue 12 D. CLIMATE STATIONS Catalogue 20 E. GROUNDWATER OBSERVATION BOREHOLES Catalogue 21 F. HYDROMETRIC STAFF Catalogue 28 LIST OF TABLES TABLE_______ DESCRIPTION_______________________________________________ Page No. TABLE 1 HYDROMETRIC FACTS 1991 .................................................................. 7 TABLE 2 LOW FLOW SURVEYS 1989-91 - UPPER SEVERN.................................. 10 TABLE 3 LOW FLOW SURVEYS 1989-91 - AVON....................................................13 TABLE 4 LOW FLOW SURVEYS 1989-91 - LOWER SEVERN................................ 15 TABLE 5 LOW FLOW SURVEYS 1989-91 - UPPER TRENT.................................... 16 TABLE 6 LOW FLOW SURVEYS 1989-91 - DOVE AND CHURNET.......................19 TABLE 7 LOW FLOW SURVEYS 1989-91 - DERWENT........................................... 20 TABLE 8 LOW FLOW SURVEYS 1989-91 - SOAR.....................................................21 TABLE 9 LOW FLOW SURVEYS 1989-91 - LOWER TRENT................................... 22 TABLE 10 MONTHLY MEAN FLOWS FOR SELECTED SITES................................. 28 TABLE 11 DAILY RAINFALL TOTALS AT RHIWLAS...............................................47 TABLE 12 DAILY RAINFALL TOTALS AT HATTON GRANGE...............................48 TABLE 13 DAILY RAINFALL TOTALS AT BRAMPTON BRYAN............................49 TABLE 14 DAILY RAINFALL TOTALS AT FINHAM............. ...................................50 TABLE 15 DAILY RAINFALL TOTALS AT PERSHORE COLLEGE........................ 51 TABLE 16 DAILY RAINFALL TOTALS AT WILLENHALL...................................... 52 TABLE 17 DAILY RAINFALL TOTALS AT EDALE MILL........................................ 53 TABLE 18 DAILY RAINFALL TOTALS AT SPONDON..............................................54 TABLE 19 DAILY RAINFALL TOTALS AT NANPANTAN........................................ 55 TABLE 20 DAILY RAINFALL TOTALS AT KEADBY............56 TABLE 21 AREAL RAINFALL FOR 1991 .................................................................. 59 TABLE 22 LEVEL AND FLOW MEASUREMENT STATIONS...................................Catalogue 3 TABLE 23 RAINFALL INTENSITY STATIONS........................................................... Catalogue 10 TABLE 24 DAILY RAINFALL STATIONS .................................................................. Catalogue 12 TABLE 25 CLIMATALOGIC AL STATIONS................................................................. Catalogue 20 TABLE 26 GROUNDWATER OBSERVATION BOREHOLES.................................... Catalogue 21 v LIST OF FIGURES FIGURE DESCRIPTION_______________________________________________________________ Page No. FIGURE 1 DOVE CATCHMENT HYDROGRAPHS & RAINFALL 20/21st DEC 1991................................5 FIGURE 2 STAGE-DISCHARGE CURVE FOR TENBURY........................................................................... 25 FIGURE 3 LOCATION MAP FOR EXAMPLE SURFACE WATER & RAINFALL SITES................... .......30 FIGURE 4 ANNUAL HYDROGRAPH AND FLOW DURATION CURVE FOR.. YEATON........................31 FIGURE 5 ...................................................................................................................RODINGTON................32 FIGURE 6 ...................................................................................................................HOOKAGATE...............33 FIGURE 7 ...................................................................................................................BEWDLEY....................34 FIGURE 8 ...................................................................................................................STARETON...................35 FIGURE 9 ...................................................................................................................EVESHAM....................36 FIGURE 10 ...................................................................................................................STOKE.......................... 37 FIGURE 11 ............................................................................................ ...................... CALTHORPE PK.......... 38 FIGURE 12 ...................................................................................................................LEA MARSTON........... 39 FIGURE 13 ...................................................................................................................IZAAK WALTON........ 40 FIGURE 14 ............................................................................................................... MARSTON-ON-DOVE. 41 FIGURE 15 ...................................................................................................................WINGFIELD PK............42 FIGURE 16 ...................................................................................................................DERBY.......................... 43 FIGURE 17 ...................................................................................................................LITTLETHORPE.......... 44 FIGURE 18 ...................................................................................................................COLWICK.....................45 FIGURE 19 MAP OF 1991 RAINFALL...............................................................................................................57 FIGURE 20 MAP OF 1991 RAINFALL AS PERCENTAGE OF LONG TERM AVERAGE............................58 FIGURE 21 LOCATION MAP FOR GROUNDWATER EXAMPLE SITES.....................................................61 FIGURE 22 GROUNDWATER HYDROGRAPH FOR... SWINNOW W O O D ' . : . ..... - ....... ........ 62 FIGURE 23 ........................................................................ MORRIS DANCERS............................................... 62 FIGURE 24 ........................................................................ HAZEL HILL...........................................................63 FIGURE 25 ............................................. ...........................SUNNYBANK FARM............................................