acronyms, programs, models, constants, time abbrevisations

ACRONYMS, PROGRAMS AND MODELS, CONSTANTS, and TIME ABBREVIATIONS
ACRONYMS PROGRAMS AND MODELS SOME CONSTANTS TIME ABBREVIATIONS	ACRONYMS 30Q20 The average streamflow over a 30-day period which is equalled/exceeded on average once in every 20 yrs. 3GM Three-Generation Modeling 7Q20 see 30Q20 (7-day period) AASHTO American Association of State Highways and Transportation AAT Arc Attribute Table ABF Average Base Flow ADF Average Diurnal Flow ADT Average Daily Traffic AES Atmospheric Environment Services (Canada) AGU American Geophysical Union Al Aluminum AM/FM Automated Mapping/Facilities Management AM/FM/GIS Automated Mapping/Facilities Management/Geographic Information System AMC Antecedent Moisture Conditions Amer. American AML Arc Macro Language AMS Annual Maximum Series ANN Artificial Neural Network ANOVA a two-way analysis of variance ANSI Area of Natural Significant Interest/American National Standards Institute AOC Area of Concern ARCS Assessment and Remediation of Contaminated Sediment ARS Agricultural Research Service As Arsenic ASAE American Society of Agricultural Engineers ASCE American Society of Civil Engineers ASCII American Standard Code for Information Interchange ASEE American Society of Engineering Education Assoc. Association ASTM American Society for Testing and Materials ATC Artificial Trapezoidal Channel AVM Acoustic Velocity Meter AWMA Air and Waste Management Association AWRA American Water Resources Association AWWA American Waterworks Association BACT Best Available Control Technology BBS Bulletin Board System BES Bureau of Environmental Services BHD alpha-Benzene Hexachloride BMM Best Management Model BMP Best Management Practice BOD Biological Oxygen Demand BSMP Better Stormwater Management Practice Bull. Bulletin C of A Certificate of Approval ca Circa, about, approximately CAD Computer Aided Design/ Drafting CADD Computer Aided Design and Drafting CAE Computer Aided Engineering CAM Computer Aided Mapping Can. Canadian CAPPI Constant Altitude Precipitation Index maps CASE Computer Aided Software Engineering CBOD Carbonaceous Biochemical Oxygen Demand Cd Cadmium CDF Centralized Detention Facility CDF Cumulative Density Function CDF Cumulative probability Density Function CDF Cumulative Distribution Function Cdn Canadian currency CDM Camp, Dresser and McKee -- a consulting engineering firm CDN$/C$ Canadian dollars CDROM Compact Disk Read Only Memory CEAM Center for Exposure Assessment Modeling CEPA Canadian Environmental Protection Act CERF Civil Engineering Research Foundation CF Continuous Flow CFA Consolidated Frequency Analysis CFF Confined Filtration Facility CFS/cfs Cubic Feet per Second - 1 cfs = 4.719x10-4m3/s CGM A Graphic File Format CG&S CH2M Gore & Storrie (a consulting engineering firm) Chap. Chapter CH2M HILL a consulting engineering firm CHy WMO Commission for Hydrology CIESIN Consortium for International Earth Science Information Network Cl Chlorine /Chloride Class EA Class Environmental Assessment CMC Central Microcomputer Controller CN Curve Number in SCS method COD Chemical Oxygen Demand COE US Army Corps of Engineers COG Council of Governments COI Cone Of Influence COV Coefficient of Variation COWAR Commitee on Water Research CP Concrete Paver CPU Central Processing Unit Cr Chromium CS Combined Sewer CSCE Canadian Society of Civil Engineers CSO Combined Sewer Overflow CSP Corrugated Steel Pipe CSPI Corrugated Steel Pipe Institute CSS Combined Sewer Shed CST Central Standard Time CSTR Constantly Stirred Tank Reactor CT-DW Common Trench-Dividing Wall CTS Common Trench-Separate system Cu Copper C.U.Q. Communaute Urbaine de Québec CUR Conceptual Urban Runoff CWA Clean Water Act (U.S.) CWQG Canadian Water Quality Guidelines CWRA Canadian Water Resources Association CWWTP Central Wastewater Treatment Plant DBMS DataBase Management System DCIA Directly Connected Impervious Area DDE Dynamic Data Exchange DEC Department of Environmental Conservation DEIS Draft Environmental Impact Statement DEM Digital Elevation Model (USGS q.v.) DEP Department of Environmental Protection Dept. Department DEQ Department of Environmental Quality DER Department of Environmental Resources DFO Dept. of Fisheries and Oceans DiCB DiChloroBenzene DHI Danish Hydraulic Institute DHS Downhill Simplex DLG Digital Line Graphs (USGS q.v.) DNR Department of Natural Resources DNRC Department of Natural Resources and Conservation DNREC Department of Natural Resources and Environmental Control DO Dissolved Oxygen DOB Digital Orthophoto Basemeap DOC Department of Conservation DOE US Department of Energy DOQ Digital Orthophoto Quads (USGS q.v.) DOS Disk Operating System DOSD Division of Sewerage and Drainage DP Depression Storage DPD Analytical method for determining chlorine residual utilizing the reagent DPD DPD n-diethyl-e-phenylenediamine DRG Digital Raster Graphics (USGS q.v.) DRH Direct Runoff Hydrographs DRSS Detroit Regional Sewer System DS Dissolved Solids DSS Decision Support System DTM Double Trace Moments DVF Digital Visual Fortran DWF Dry Weather Flow DWSD Detroit Water and Sewerage Department DXF Drawing Exchange File E. coli. Escherichia coli. EA Environmental Assessment EA Error Analysis EAAC Environmental Asessment Advisory Committee EAs Exposure Assessments EBB Electronic Bulletin Board ECD Electron Capture Detector ECP Erosion Control Plan EDF Energy Density Flux EDP Extended Detention Pond EF Evaluation Function EIA Effective Impervious Area EIC Engineering Institute of Canada EIS Environmental Impact Statement EMAIL Electronic Mail EMAP Environmental Monitoring and Assessment Program EMC Event Mean Concentration EMT Event Mean Temperature EMDP Environmental Master Drainage Plan Eng'rg Engineering EPA Environmental Protection Agency (U.S.) EPRI Energy Production Research Institute EPS Environmental Protection Service ERL Environmental Research Laboratory ESA Environmentally Sensitive Area ESRI Environmental Systems Research Institute EST Eastern Standard Time ET Evapotranspiration EV Extreme Value FA Frequency Analysis FAO Food and Agriculture Organization (of the UN) FC Fecal Coliform FCC Fecal Coliform Concentration FDRP Flood Damage Reduction Program Fe Iron FEMA Federal Emergency Management Agency FERC Federal Energy Regulatory Commission FHWA Federal Highway Administration FL Fuzzy Logic FM Facilities Management FS Fecal Stretococci FS Filterable Solids ft-NGVD feet referenced to NGVD (q.v.) FT Fourier Transform FTP File Transfer Protocol, an Internet utility FTU Formazin Turbidity Unit FWS Free Water Surface FY Fiscal Year GBWWTP Gold Bar Wastewater Treatment Plant, Edmonton GC Gas Chromatography GC/MS Gas Chromatography/Mass Spectrometry GDD Growing Degree Days GDS Graphic Data System GEWEX Global Energy and Water Cycle Experiment GFAA Graphite-Furnace Atomic Absorption GI Growth Index GIS Geographic Information System GLIN Great Lakes Information Network GPC Global Predictive Control gpcd Gallons per capita per day GPM/gpm Gallons Per Minute GPS Global Positioning System GRCA Grand River Conservation Authority, Ontario GRU Grouped Response Unit GUI Graphical User Interface GWI Ground Water Infiltration ha Hectares HCB Hexachlorobenzene HEC Hydrologic Engineering Center (U.S. Army Corps of Engineers) Hg Mercury HG Hydraulic Grade HGF Hydraulic Gradeline Factor HGL Hydraulic Gradient Line HISD High-Intensity Short-Duration HPC Heterotrophic Plate Count HQ Headquarters HRT Hydraulic Retention Time HRU Homogeneous Response Unit HSI Habitat Suitability Indices HSIA Hydraulically Significant Imper-vious Area HWL High Water Level HWY Highway I/I Infiltration/Inflow I/O Input/Output IA Initial Abstraction IAG Interagency Agreement IAHR International Association for Hydraulic Research IAHS International Association of Hydrological Sciences IAMAP International Asociation of Meteorology and Atmospheric Physics IAWPRC International Association for Water Pollution Research and Control IAWQ International Association on Water Quality IBM International Business Machines ICAP Inductively Coupled Argon Plasma ICI Industrial, Commercial and Institutional ICID International Commission on Irrigation and Drainage ID Identification; Identification number IDF Intensity-Duration-Frequency curves IDS Impervious Depression Storage IEEE Institute of Electrical and Electronic Engineering IETD Inter-Event Time Definition IFIM Instream Flow Incremental Methodology IHD International Hydrological Decade IHP International Hydrological Program IIHR Iowa Institute of Hydraulic Research IJC International Joint Commission IMP Imperviousness IN Indicated Number INAA Instrumental Neutron Activation Analysis INRS-Eau Institut National De La Recher-che Scientifique -Eau (see NWRI) Inst. Institute Int. International IP Internet Protocol IRC Interflow Recession Parameter ISE Integral Square Error ISS In-System Storage IUGS International Union of Geological Sciences IUH Instantaneous Unit Hydrograph IWC Industrial Waste Control IWRA International Water Resources Association J. Journal JTU Jackson Turbidity Unit KAI Kuck and Associates l Litre LAER Lowest Achievable Emission Rate LAN Local Area Network LANDSAT Satellite Imagery for Geograph-ical Information LBIS Land Based Information System LC50 Lethal Concentration to 50% of exposed organisms LDMI Long-Duration Moderate Intensity LMIS Lockheed Martin Information System lpcd Liters per Capita per Day LPD/lpd Liters per Day LPM/lpm Liters Per Minute LPS/lps Liters Per Second LRC Local Reactive Control LSZN Lower Soil Zone Nominal Storage LWL Low Water Level m Metres m3 Cubic Metres MA Municipal Aquifer mcf Million Cubic Feet MCLs Maximum Concentration Levels MDEQ Michigan Dept. of Environmental Quality MDP Master Drainage Plan MEA Municipal Engineers Association MEF Ministère de l'Environnement et de la Faune Mg Magnesium MGD/mgd Million Gallons Per Day MH Maintenance Hatch (Manhole) MIMO Multiple Input-Multiple Output MINTEQA2 Metal Speciation for Equilibrium for Surface and Groundwater mi2 square miles MIPS Million Instruction Sets Per Second MISA Municipal/Industrial Strategy for Abatement (Canada) MIT Minimum InterEvent Time MLD/mld Million Liters per Day MLRA Major Land Resource Area MMI Man-Machine Interface Mn Manganese MOE Ministry of the Environment MOEE Ministry of Environment and Energy (Environment Ontario) MPN Most Probable Number MRI Mean Recurrence Interval MS Mass Spectrometry MSD Mass Spectrometry Detector MSL Mean Sea Level MSMP Master Stormwater Management Plan MSS Multi Spectral Scanner MTP Main Treatment Plant MWRA Massachusetts Water Resources Authority N Nitrogen Na Sodium NAPP National Aerial Photography Program NAQUADAT National Water Quality Data Base NAWDEX National Water Data Exchange NCDC National Climatic Data Center NDMA n-nitrosodimethylamine NGO Non-Governmental Organization NGVD National Geodetic Vertical Datum NH3 Ammonia NH3-N Ammonium Nitrogen Ni nickel NIMBY Not In My Backyard NITR nitrate plus nitrite NN Neural Networks NNN Nitrate/Nitrite Nitrogen No. Number NO3-N Nitrate, Nitrite NOAA National Oceanic and Atmospheric Administration NOD Nitrogenous Oxygen Demand NPD Nitrogen-Phosphorus Detector NPDES National Pollution Discharge Elimination System (U.S.) NPS Non-Point Source NRCS Natural Resources Conservation Service (U.S.) NTIS National Technical Information Service (U.S.) NTU Nephelometric turbidity unit NURP Nationwide Urban Runoff Program (U.S.) NWIS National Water Information System NWRI National Water Research Institute (Canada) NWS National Weather Service (U.S.) O&M Operation and Maintenance OARM Office of Administration and Resources Management (EPA) OCs Organic Chlorinated Pesticides ODBC Open Database Connectivity ODWO Ontario Drinking Water Objective OF Objective Function OGS Oil/Grit Separators OLE Object Linking and Embedding OM Organic Matter OMNR Ontario Ministry of Natural Resources OP Organophosphorus O-P Ortho-phosphate ORD Office of Research and Development OSCTS On-Site Containment and Treatment System OSD On-Site Detention OST Office of Science and Technology (EPA) OSU Oregon State University OW Office of Water P Phosphorus p. Page PAH Polycyclic-Aromatic-Hydrocarbons; Polynuclear Aromatic Hydrocarbons PAP Porous Asphalt Pavement PAR Photosynthetically Active Radiation Pb Lead PC Personal Computer PCA Principal Component Analysis PCB Polychlorinated Biphenyl PCP Pollution Control Planning /Pollution Control Plant PCS Permit Compliance System PDE Partial Differential Equation PDF/pdf Probability Density Function PDM Probabilistic Dilution Model PDMS Probability Distribution Multifractal Scaling PDS Pervious Depression Storage PEL Probable Effect Level PET Potential Evapotranspiration PF Plug Flow pH Negative Log of Hydrogen Ion Concentration Ph.D. Doctor of Philosophy PHC Petroleum Hydrocarbons Phys. Physics PLC Programmable Logic Controller PLUARG Pollution from Land Use Activities Reference Group PO4 Ortho-phosphate POT Peak Over a Threshold pp Pages PP Permanent Pools PR Probabilistic Reasoning Proc. Proceedings PSD Power Spectral Density pub. Published PVC Poly Vinyl Chloride PWQM Provincial Water Quality Monitoring Network QA/QC Quality Assurance/Quality Control QAP Quality Assurance Plan R&D Research and Development R/LPOLY Right/Left Polygon RACT Reasonably Available Control Technology RAP Remedial Action Plan RBE RuleBase Engine RC Runoff Catchment RDBMS Relational Database Management System RDI Rainfall Derived Infiltration RDII/RDI&I/ RDI/I Rainfall Dependent Inflow/Infiltration RDMS Relational Database Management System RE Relative Error RFA Rainfall Accumulation Map RM Rational Method ROW Right of Way RTC Real Time Control RTF Retention Treatment Facility RTU Remote Telemetry Unit SA Sensitivity Analysis SAMS Sewerage Analysis and Management System (MWRA q.v.) SC Soft Computing SCADA Supervisory Control and Data Acquisition (system) SCAS Sewer Connection Application System SCC Soil Conservation Curves SCE Shuffled Complex SCOWAR Scientific Committee on Water Research SCS USDA (q.v.) Soil Conservation Service SDE Spatial Database Engine SEE Standard Error of Estimate SEI Software Environmental Institute (Carnegie Mellon University) SEK Swedish Krone SFAS Sewer Flow Analysis System SFO Stipulation and Final Order SFS Subsurface Flow System SHEF Standard Hydrometeorological Exchange Format SI Suitability Index SIC Standard Industrial Classification SIU Significant Industrial Users SLRT Sewer Level Remote Telemetry SO4 Sulphate Soc. Society SOCSDS Southeastern Oakland County Sewage Disposal System SOD Sediment Oxygen Demand SOPs Standard Operating Procedures SPAM Spatially Averaged Mean SPCSP Structural Plate Corrugated Steel Pipe SPDES State Pollutant Discharge Elimination System SPM Storage Pumping Model SQL Structured Query Language SRP Soluble Reactive Phosphorus SRS Storm Relief Sewer SS Sanitary Sewer-Shed SS Subsurface Subcatchments SS Suspended Solids SSES Sewer System Evaluation Surveys SSMP Sewer System Master Plan SSO Sanitary Sewer Overflow STN Scientific and Technical Information STORET Storage and Retrieval of US Waterways Parametric Data STP Sewage Treatment Plant STS Synthetic Time Series SV State-Variable SWM Stormwater Management SWMPs Stormwater Management Plans/Practices SWPPP Storm Water Pollution Prevention Plan SYMAP Synagraphic Mapping TBRG Tipping Bucket Rain/Runoff Gage TBT Time Between Tip TC Total carbon (incl. organic & inorganic) TDN Total Dissolved Nitrogen TDS Total Dissolved Solids TEL Threshold Effect Level TF Transfer Function THOD Theoretical Oxygen Demand TIC Total Inorganic Carbon TIN Triangulated Irregular Network TKN Total Kjeldahl Nitrogen TM Thematic Mapper TMDL Total Maximum Daily Load TN Total Nitrogen TN-Diss Total Nitrogen dissolved TN-Part Total Nitrogen Particulate TOC Total Organic Carbon TOD Total Oxygen Demand TP Total Phosphorus TPH Total Petroleum Hydrocarbons Trans. Transactions TS Time Series TSI Trophic State Indices TSM Time Series data Manager TSS Time Series Store TSS Total Suspended Solids TVS Total Volatile Solids U. University UAA Use Attainability Analysis UAB Univeristy of Alabama at Birmingham UBT Upper Bukit Timah, Singapore UN United Nations UNIX A general purpose time-sharing operating system. Trademark of Bell Laboratories. UPM Universal Process Modeling URL Uniform Resource Locator, an Internet identification system US $ United States dollars USACE United States Army Corps of Engineers USCS Unified Soil Classification System USDA United States Department of Agriculture USEPA United States Environmental Protection Agency USGPM US Gallons Per Minute USGS United States Geological Survey UST Underground Storage Tank USZN Upper Soil Zone Nominal Storage UTM Universal Transverse Mercator UV Ultra Violet UWMB Urban Watershed Management Branch (USEPA) UWIN Universities Water Information Network UZS Upper Zone Storage V Vanadium V-D Volume-Duration VDU Visual Display Unit VOC Volatile Organic Compound Vol. Volume VSS Volatile Suspended Sediment VTOC Volatile Toxic Organic Compounds WAN Wide Area Network WATSTORE National Water Data Storage and Retrieval System WDM Watershed Database Management WEF Water Environment Federation WES Waterways Experiment Station (COE q.v.) WIMP Windows, Icons, Menus, and Pointing Devices WIMS Wastewater Information Management System WMP Watershed Management Plans WMSS Watershed Management Support System WPCP Water Pollution Control Plant WQS Water Quality Standards WSEL Water Surface Elevation Level WSM Watershed Model WT Wavelet Transform WTP Water Treatment Plant WUA Weighted Usable Area WWF Wet Weather Flow WWT Wastewater Treatment WWTP Wastewater Treatment Plant WWW World Wide Web WYSIWYG What You See Is What You Get Zn Zinc ZUM Zones of Uniform Meteorology
	2. PROGRAMS AND MODELS Access MS Database ADAPT see GIS ADAPT AGNPS Agricultural Non-Point Source AML Arc Macro Language ANNIE a USGS hydrologic timeseries data management system ArcFM AM/FM/GIS application for the utility industry ARCINFO a GIS program (ESRI (q.v.)) ArcView a GIS program (ESRI (q.v.)) ASDM Atmospheric and Sediment Deposition Model ASWMM Analytical SWMM (q.v.) (Univ of Toronto) AutoCAD(r) an automated computer-aided drafting package BASIC a programming language BASINS USEPA Better Assessment Science Integrating Point and Nonpoint Sources program BATHTUB a reservoir loading model BOSS-DAMBRK a hydrodynamic flood routing program CAGIS CSO Area Geographic Information System CASCADE2 Version of CASCCADE linking HECDSS and SWMM (Univ. of Guelph) CASCCADE Co-evolving Assistant Software for Changing Computational and Data Environments (links ANNIE and SWMM) CASE Computer Aided Software Engineering CASS WORKS an integrated infrastructure management software for water distribution, storm drainage etc. CEQUEAU a distributed conceptually-based reservoir model CE-QUAL-R1 an aquatic plant model CFA Consolidated Frequency Analysis Package CMP Computer Mapping Program COGO a CAE application module COMBINE a time-series module of the SWMM (q.v.) program CORMIX Cornell Mixing Zone Model (USEPA) CWQM Circulation and Water Quality Model DBMS Database Management System DEM Digital Elevation Model DOMECOL a water pollution model DOMOD7 Dissolved Oxygen Model Version 7 DOS a computer operating system DRASTIC a groundwater pollution-vulnerability evaluation system DSPLAY a graphical display module of HECDSS DSS Data Storage System, a type of file format DSSUTL a data storage system utility module of HECDSS DTM Digital Terrain Model DUH digital elevation models DWOPER Dynamic Wave Operational Model ECOL ecological aquatic plant model (GRCA (q.v.)) ECOL1 dynamic aquatic plant growth and nutrient uptake model EPICWQ Erosion/Productivity Impact Calculator -Water Quality ERDAS a raster based GIS (Earth Resource Data Analysis System) EXAMSII Exposure Analysis Modeling Systems II EXSUDS extended SUDS program EXTRAN extended transport, a computational module of the SWMM (q.v.) program FDAM flood damage analysis model FORTRAN a high-level programming language GAMES Guelph evaluation effects of Agricultural Management on Erosion and Sedimentation (Univ. of Guelph) GAWSER Guelph All-Weather Sequential-Events Runoff model GCM General Circulation Models GeoGUIDE an ARC/INFO GUI Geo/SQL(r) a geographical program GeoSelect GIS interface to facilitate raingage selection and data retrieval GeoSTORM a river program (Innovative Systems Developers Inc) GH GIS-Hydrology interface (Univ. of Texas CRWR) GISADAPT Areal Design and Planning Tool; a TIN GIS (W.E. Gates & Assocs) GISFPM GIS floodplain management GPS-X a dynamic model for the design, operation and control of wastewater treatment plants GRASS Geographical Resources Analysis Support System (US Army COE) GRSM Grand River Simulation Model GUI Graphical User Interface HABTAV habitat simulation program HEC1 hydraulic modeling program to determine discharges (US Army Corps of Engineers) HEC2 hydraulic modeling program to determine water surfaceelevations (do) HECAD interface linking HEC1 with ADAPT (do) HECDSS HEC hydrologic time-series data management system (do) HECRAS HEC river analysis program (do) HSPF/HSP-F Hydrologic Simulation Program-Fortran (USEPA) HWY DSS Highway Decision Support System HYDRA Hydrologic Data Retrieval and Alarm system HYDRO a steady state model for WWTP (q.v.) hydraulic processes. (CH2MHill). HYMO a hydrologic model (USDA) HYPERCARD a software system developed by Apple. IDRISI GIS program (Clark Univ.) IFG4 hydraulic/velocity simulation program IFORM a rainfall file format defined by RAIN module of SWMM (q.v.) ILLUDAS Illinois Urban Drainage Area Simulator INTERHYMO a version of HYMO (q.v.) IOWDM a file input/output utility for ANNIE (q.v.) LFA Low Flow Frequency Analysis MATHPK a math and statistics module of HECDSS MEGAPLANT a macrophyte model MIDUSS a stormwater design program MIKE -- simulation models for water systems (DHI (q.v.)) MODFLOW Modular 3-Dimensional Finite-Difference Ground-water Flow Model MOUSE sanitary sewer program (DHI (q.v.)) MTOPOND Ontario Ministry of Trans-portation quality control performance model for stormwater ponds MTV Model Turbo View MTVE Model Turbo View -EXTRAN NT Microsoft Windows NT operating system OASIS On-line Access and Service Information System ORACLE Database OTTHYMO Version of the USDA runoff program (HYMO) OWN Oman Water Networks package PCSWMM a decision support system for the SWMM (q.v.) program (CHI (q.v.)) PCSWMM GIS a graphical model development environment which provides links to GIS/AM/FM databases (CHI (q.v.)) PDF Probability Density Function PDM Probabilistic Dilution Model PHABSIM physical habitat simulation modeling program which calculates the relationship between stream flow and physical habitat for various life stages of an aquatic organism PLAN a CAE applications module PLUS a software system (Spinnaker) POND model (MOEE) PSRM Pen State Runoff Model QQS Quantity Quality Simulation QUAL2E Enhanced Stream Water Quality Model QUALHYMO a version of HYMO (q.v.) RAIN a time-series module of the SWMM (q.v.) program RAINEV a rainfall analysis computer module of SIMPTM (q.v.) RAP Rainfall Analysis Program RBE Rule Base Engine REPGEN a report presentation module of HECDSS RUNOF97 a GIS-based distributed surface runoff model (Laurentian U.) RUNOFF a computational module of the SWMM (q.v.) program RUNSTDY Dynamic wave routing model for analysis of complex sewer systems (Reid Crowther) SAMS Sewerage Analysis and Management System SDE Spatial Database Engine S/T; S-T Storage/Treatment module of SWMM (q.v.) SEWHYMO a hydrological model SIMPLE a geo-referenced hydrologic model for remotely sensed data SIMPTM Simplified Particulate Transport Model SLAMM Source Loading and Management Model (Pitt, Univ. of Alabama) SMIFF Spatial Mapping for Integrated Flood Forecasting SPIDA An unsteady routing model of hydrologic/hydraulic processes for highly looped storm drainage networks SPINNAKER a hypercard program STATS a time-series module of the SWMM (q.v.) program (STATISTICS) STORAGE a computational module of the SWMM (q.v.) program STORET Storage and Retrieval System STORM Storage Treatment Overflow Runoff Model (US Army COE (q.v.)) STREAM Segment Travel River Ecosystem Autograph Model SUDS Statistical Urban Drainage Simulator SWIFT n operational RTC model (C.U.Q. (q.v.)) SWMenu a SWMM (q.v.) shell SWMM US EPA Stormwater Management Model SWRRB-WQ Simulator Water Resources In Rural Basins - Water Quality SWSTAT a statistics module of ANNIE (q.v.) SYNOP statistical rainfall analysis program TEMP a time-series module of the SWMM (q.v.) program TIGER Topographically Integrated Geographic Encoding and Referencing TOXIWASP See WASP4 TR-20 USDA (q.v.) SCS (q.v.) Technical Release 20 - a watershed hydrology model to route a design storm hydrograph through a pond TR55 USDA SCS Technical Release 55 - TRANSPORT a computational module of the SWMM (q.v.) program WASP Water (Quality) Analysis Simulation Program (USEPA) WATFLOOD a hydrologic data base management system for real-time flood forecasting (Kouwen, U. of Waterloo) WATRSHD Watershed Analysis Tools for Reporting, Statistics, Hypothesis-testing and Display WATSTORE Water data storage and retrieval system WDM Watershed Data Manage-ment, a type of file format WEPP water erosion prediction WINSTDY Dynamic wave routing model for analysis of complex sewer systems (Reid Crowther) WSWMM a Windows shell for SWMM (q.v.) XP-SWMM An expert systems version of SWMM (XP Software)
	3. SOME CONSTANTS 1 m3 of water weighs 1 000 kg. 1 ft3 of water weighs 62.4 lb. 1 U.S. gal of water weighs 8.34 lb. 1 Imp. (English) gal of water weighs 10 lb. 1 day has 1 440 minutes and 86 400 seconds. aMetric kilograms in this table are weight kilograms which equal 9.81 (m/s2) x kg (mass) = 9.81 Newtons.
	4. TIME ABBREVIATIONS Second s Minute min Hour h Day d Week week Month month Year y