GW recharge assessment. History and current position. D.Johnson, P. Hulme and Steve Fletcher
Film canisters and associated lessons I got a few. The best one got 10 As a group we got 30 Yellow Card ?
The wider context for GW recharge Available water Crude fast/slow splitRunoff, interflow and recharge WFD Initial Nitrates Method Vulnerability Lowflow 2000 WFD Further CERF GW modelling GW recharge assessment. CEH
The aim is to put our effort into improving our understanding. I.e. the interesting bit. Data. Waste a lot of time and money on this. Guidance. Use experts from other fields to guide us. Tools. Confidence. These are the component parts of the recharge project with CEH.
DATA Rainfall. CERF Ref Crop PE. MOSES Crop calendar Soils toolkit and NATMAP DEFRA crop returns 92, 96, 2000 ITE 2000 Drift provinces and GeoSure Depth to water table? Kastic features database? Land Drainage?
DRIFT Provinces ? Additional understanding gained from experts CERF Technical reports. Rainfall and PE. CEH MOSES/MORECS Comparison. Met. Office
Tools GIS. Quick but does not really allow us to test understanding and investigate. Spreadsheet. Good for initial investigation of processes. Distributed recharge runoff models 4R Agency ZOODR DHI
Confidence Started using PEST will carry on with CEH. Try and understand what processes are important and when. Try and understand model performance better. Aim to help identify most likely causes of poor model results How wrong could we be?
Future Work Weather generator LANDSIM and CONSIM Are GUI’s the only way to stay sane?