1.

Record Nr.

UNINA9910458218103321

Titolo

Curve number hydrology [[electronic resource] ] : state of the practice / / prepared by the ASCE/EWRI Curve Number Hydrology Task Committee ; sponsored by Environmental and Water Resources Institute (EWRI) of the American Society of Civil Engineers ; edited by Richard H. Hawkins ... [et al.]

Pubbl/distr/stampa

Reston, VA, : American Society of Civil Engineers, c2009

ISBN

0-7844-7257-2

Descrizione fisica

1 online resource (117 p.)

Altri autori (Persone)

HawkinsRichard H. <1934->

Disciplina

551.48/8

Soggetti

Runoff

Rain and rainfall

Hydraulic engineering

Hydrology

Water resources development

Electronic books.

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Description based upon print version of record.

Nota di bibliografia

Includes bibliographical references (p. 77-104) and index.

Nota di contenuto

""Contents""; ""I: INTRODUCTION""; ""Purpose and Charge""; ""Authority, Sources, Leadership""; ""Rainfall-Runoff""; ""Need""; ""Method""; ""Roles""; ""II: CURVE NUMBER METHOD""; ""Development""; ""Curve Numbers and Land Uses""; ""Handbook tables""; ""Soils""; ""CN Adjustments between Hydrologic Soil Groups""; ""Antecedent Moisture""; ""Application""; ""Modes of Application""; ""Drainage Area""; ""Storm Size Limitations""; ""Annual Events""; ""Summary""; ""III: FINDINGS and DEVELOPMENTS""; ""Structure of the Basic Equation""; ""Dimensionless Expressions""; ""General Forms""

""Water Budget Forms""""Water Budget Allocations""; ""Solutions""; ""Other Derivations and Partial Area Interpretations""; ""Other Identities""; ""Sensitivity""; ""Infiltration""; ""Infiltration Forms""; ""Alternative Origins""; ""Basic Conflicts""; ""Equivalences""; ""Soil Groups""; ""Initial Abstraction""; ""Investigations of I[sub(a)]/S""; ""Effects of Alternative λ""; ""Conjugate CNs""; ""Effects on



Hydrographs""; ""Soil Moisture Repesentation and AMC/ARC""; ""Prior 5-Day Rainfall Depths""; ""AMC Conversion Values""; ""Double Normal Plotting""; ""AMC and ARC as ""Error Bands""""

""Curve Numbers and Soil Moisture Modeling""""Other CN Effects""; ""Soil Moisture Effects on Direct Runoff""; ""Storm Effects�Intensity, Distribution, and Duration""; ""CN and Direct Runoff Variation""; ""Seasonal Effects""; ""Slope Effects""; ""Land Use Effects""; ""Effects of Drainage Area""; ""Regional/Climatic Variations""; ""Calibration Methods""; ""Needs and Opportunities""; ""NEH4 Method""; ""Data Considerations""; ""Least Squares Method""; ""Asymptotic Method""; ""Distribution Matching Method""; ""Fitting to Continuous and Event Hydrograph Models""

""CNs from Rainfall Simulation Plots""""Summary""; ""Methods Comparisons""; ""Performance Comparisons""; ""CN Table Comparisons""; ""Green-Ampt Comparisons""; ""Comparison with Rational Method""; ""Multiple Comparisons""; ""Applications to/with Remote Sensing and GIS""; ""Current Usage and Professional Practice""; ""Authority""; ""Myths, Misunderstandings, Misapplications, and Misconceptions""; ""Creativity in Professional Practice""; ""Critique""; ""IV: SUMMARY, CONCLUSION, DISCUSSION and RECOMMENDATIONS""; ""Summary and Conclusions""; ""Origins""; ""Evolution""; ""Adaptation and Survival""

""General Hydrology""""Current Status""; ""Discussion""; ""Is It Science?""; ""Does It ""Work""?""; ""Can It Be Replaced?""; ""Can It Be Improved?""; ""Recommendations""; ""Keeper""; ""Information Exchange""; ""Reconfiguring I[sub(a)]/S""; ""Curve Numbers in Continuous Modeling Systems""; ""Remote Sensing""; ""Local Calibrations""; ""Climatic Adjustments""; ""Infiltration Associations""; ""Non-CN Situations""; ""Forested Watersheds""; ""Land Management Applications""; ""Hydrologic Soil Groups""; ""Epilogue""; ""Appendix I: Solutions to the Curve Number Equation""

""Appendix II: List of Symbols and Acronyms""