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25 cor. | €.r4.'rq6.? 'loll-tst6r.'. &.r !l{r *'r.d fi.r r.r|ni FIGURI I2 Rel ati onshi p between CRegr(Lin Res) and catchment characteristics Catcblent No. 301 (lo events) 2052 (8 events) (11" events) 4477 (13 events) cRegtessio' obj. F.L obj. F.3 (ISE) (PEAX) 't.o 20.2 8.8 26.4 4.9 31.4 6.6 22.7 linematic obj. F,r obj. F-3 (ISE) {PEAK) 8. I 34.3 9.1 25.r It seeDs that c , evaluateal from neasured falnfall-nmoff data, R eltr 1s better, at least wlth reEpect to obJectlve functlon 1, but pelbaPs t}|e C ftts tne p€ak beeler. In conclusion, it is alifflcult to say KI'NEE which one should be uged, or even if t-he singrle linear storage 1s at aII satlsfactory, a polnt rrhtdr rrlll be exaDined fulther l.n the coDlEllson of all the tnodels. In the nodel coDParlson (5.e), lesults !o! the Dodel o"in9 Cn g. only ale shown - I I t t t t I t t t t t I I t I I I t I
I I t I I I I t r t I I I I t t I I I I 5.3 oalel 2: Non-Ilne.l! reaervolt aetetsL d.ectiqtion the non-llnear rarslnoir loodal ia givan a! follort! s - kQn €'r dt -e Error surfacefor nonl inear reservol r on catchment 311 dlynabLc eqqatlon contlnulty equatlon (s.6) ( 5,7) fh€ prevlous caac of tJre llnear teAelvoir ia a ep€clal v€rston of tlrls noilel ehore para&etir n - 1. Unllke the linea! malel, howev€r, the above systeD haa no analytlcal aolutLon for genenl valu€s of !I atld requllea a nutlerical tcheme. Exabplea of the use of thls Dodel have been glven by KIdd (19?6, 1978) rnd van at€n 8619 (19?g). Ih6 nodel 1s progla@od by p€rforDl,ng r Nertolr-Raphron lt€latl-on on a flnlte-a[!f,elence foraulatlon of equatlon 5.6 and 5.? ooabltt€d. Senoitivitu of npdel patvneteta grror srtface [appl,og shdred th€ Darked inler-colrelat1on tetween tr anal k whlch has b€en prevlously obselved (Klddr l9?8). Flgure ll is an exlbpJ,e of JuEt such !.ri e!to! sutfdce. A9 ln the case of t]!e l{on-line.r Reservolr *ith Ttne Lag (!ot!el 3, next 6ection), the tso parasetets were found to be appj.oxlnately equally Eensi,tlve to peltulbatlons arouhd tie optibub. Also baEed on the sale th€oletlcal consial,er.tions (see s€ct1on 5.4), it waB alectded to ailopt a tixeat valu€ of n of .6?,
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