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UCI import with 15min timestep #22

@trees4me

Description

@trees4me

Hi,
I have a UCI file that runs at 15min timestep. A couple issues have come up running the import checks, but I'm still unable to reproduce HSPF results.

Issues:

  1. external sources evap record is 15-min with a 0.75 multiplier in HSPF. The MFACTOR comes into HSP2 ok, but needs to be divided by 96 (=4*24). After revising this MFACTOR the IMPLND and portions of the PERLND are ok.

  2. The PERLND in HSP2 are not reproducing HSPF results. I've traced the source to the groundwater storage bin (AGWS/AGWO). Everything above that is nearly identical. The AGWI is nearly identical for HSP2 vs HSPF.
    perlnd_p211_pwater_agwi

However, the AGWO, AGWS, and GWVS all vary between HSP2 and HSPF. I checked all the PERLND parameters and states and they are the same. Evap is off on the groundwater bin (AGWET=BASET=0).

perlnd_p211_pwater_agwo
perlnd_p211_pwater_agws

Trying to figure out what to try next. KGW appears to be 0 (AGWRC=0.997, DELT60=0.25 for 15min), and perhaps HSP2 is treating this case differently than HSPF? Is something else different about the groundwater routine? Perhaps the 15-min time step may be an issue here as it was with item 1.
Any ideas are appreciated.
Thanks.

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