1 / 87

Hydrology Calibration

Hydrology Calibration. Phase 5. Calibrators. USGS-MD Jeff Raffensperger Sarah Martucci Joe Vrabel Angelica Gutierrez Gary Fisher. Calibrators. USGS-VA Doug Moyer Alan Simpson Jen Krstolic ICPRB Ross Mandel Julie Kiang. Calibrators. CBP Sara Brandt Jing Wu Kate Hopkins

fritz
Download Presentation

Hydrology Calibration

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Hydrology Calibration Phase 5

  2. Calibrators • USGS-MD • Jeff Raffensperger • Sarah Martucci • Joe Vrabel • Angelica Gutierrez • Gary Fisher

  3. Calibrators • USGS-VA • Doug Moyer • Alan Simpson • Jen Krstolic • ICPRB • Ross Mandel • Julie Kiang

  4. Calibrators • CBP • Sara Brandt • Jing Wu • Kate Hopkins • Lewis Linker • Gary Shenk

  5. Status • Consistent with other HSPF calibrations in the literature • Better and more consistent overall than phase4 • Reaching point of diminishing returns

  6. Strategy • Water Balance • Stormflow / Baseflow separation • Base Flow • Storm Flow • Seasonal Changes Adapted From: Users Manual for an Expert System (HSPEXP) for Calibration of the Hydrological Simulation Program—Fortran By Lumb, McCammon, and Kittle USGS-WRI Report

  7. Statistics to judge overall calibration • Bias • Base / Storm separation • Recession rates • Model efficiency

  8. Jan 1

  9. Baseflow / Stormflow Stat Fraction of flow that is baseflow (simulated) Bstat = 1 - Fraction of flow that is baseflow (observed) baseflow / total flow (simulated) Bstat = 1 - baseflow / total flow (observed) stormflow / total flow (simulated) Qstat = 1 - stormflow / total flow (observed)

  10. Jan 1

  11. Jan 1

  12. Baseflow / Stormflow Recession Statistic average Simulated recession index Q rec Index = 1 - average Observed recession index quick flow tomorrow ) Average Recession index = Average ( quick flow today

  13. Nash – Sutcliffe Model efficiency (variance of errors) (variance of observed) Computed for daily, log of daily, and monthly values. 1 -

  14. Reported values of N-S efficiency • Often reported, but little information on ‘standards’ of efficiency • Reported daily efficiencies  0.5 - 0.75 • Reported daily log efficiencies  0.5 - 0.75 • Reported monthly efficiencies  0.7 – 0.8

  15. Reported values of N-S efficiency • Often reported, but little information on ‘standards’ of efficiency • Reported daily efficiencies  0.5 - 0.75 • Reported daily log efficiencies  0.5 - 0.75 • Reported Monthly efficiencies  0.7 – 0.8

  16. Reported values of N-S efficiency • Often reported, but little information on ‘standards’ of efficiency • Reported daily efficiencies  0.5 - 0.75 • Reported daily log efficiencies  0.5 - 0.75 • Reported Monthly efficiencies  0.7 – 0.8

  17. Parameter Values

  18. Where are we in relation to p4 • Better overall • More consistent parameterization • Calibrated at many more sites

  19. Status • Consistent with other HSPF calibrations in the literature • Better and more consistent overall than phase4 • Reaching point of diminishing returns • Still a few small areas and issues that need attention in hydrology

  20. Ready for Sediment? • River calibration cannot change significantly • Land calibration must have significant surface runoff

More Related