online_conceptual_overland_two:   Calculation of conceptual dimensionless overland flow hydrographs (1 ≤ m ≤ 3) References • Ponce et al., 1997:  Generalized conceptual modeling of dimensionless overland flow hydrographs. • Ponce, V. M., 2014:  Engineering Hydrology, Principles and Practices, Chapter 4, Section 2. ⇐  Rising limb Receding limb  ⇒ INPUT DATA:            [Sample input]                       Watershed / ID (optional):   /var/www/html/ponce/onlineconceptualoverlandtwo.php on line 757 " > Select units:     SI U.S. Customary     (SI units) (U.S. Customary units) Select formula:     [1]  Linear (m= 1) [2]  Chezy (m= 3/2) [3]  Manning (m= 5/3) [4]  Horton (m= 2) [5]  Izzard (m= 3) Select hydrograph:     A.  Rising B.  Receding C.  Both rising and receding [Numbers within square brackets indicate that this input is required for the selected formula] Rainfall duration tr  [1,2,3,4,5]  (min):    Warning: Undefined variable $unitsystems in /var/www/html/ponce/onlineconceptualoverlandtwo.php on line 790 Warning: Undefined variable $durationunits in /var/www/html/ponce/onlineconceptualoverlandtwo.php on line 792 Length L  [1,2,3,4,5]  (m) (ft):    Warning: Undefined variable $unitsystems in /var/www/html/ponce/onlineconceptualoverlandtwo.php on line 804 Warning: Undefined variable $lengthunits in /var/www/html/ponce/onlineconceptualoverlandtwo.php on line 806 Slope So  [1,2,3,4,5]  (m/m) (ft/ft):    Warning: Undefined variable $unitsystems in /var/www/html/ponce/onlineconceptualoverlandtwo.php on line 817 Warning: Undefined variable $slopeunits in /var/www/html/ponce/onlineconceptualoverlandtwo.php on line 819 Effective rainfall intensity i  [1,2,3,4,5]  (mm/hr) (in/hr):    Warning: Undefined variable $unitsystems in /var/www/html/ponce/onlineconceptualoverlandtwo.php on line 831 Warning: Undefined variable $intensityunits in /var/www/html/ponce/onlineconceptualoverlandtwo.php on line 833 Manning friction coefficient n   [1,2,3,4]:    Water temperature T  [5]  (oC) (oF):    Warning: Undefined variable $unitsystems in /var/www/html/ponce/onlineconceptualoverlandtwo.php on line 852 Warning: Undefined variable $temperatureunits in /var/www/html/ponce/onlineconceptualoverlandtwo.php on line 854 Warning: Undefined array key "Submit" in /var/www/html/ponce/onlineconceptualoverlandtwo.php on line 866 OUTPUT/RESULTS: q /qe t /te q t 0 0 0 0   Your request was processed at  10:54:16 pm on April 3rd, 2025   [ 250403  22:54:16 ]. Thank you for running   online_conceptual_overland_two   Please call again.   [190802]