online_cipoletti:   Calculation of discharge through a Cipoletti weir USBR Water Measurement Manual Formula: Q = 3.367 L H3/2          [in U.S. Units] Head H on the weir, in m [or ft] Length L on the weir, in m [or ft] Discharge Q  in L/s [or cfs] See USBR Manual for general methodology INPUT DATA:       [Description] Select Units:      SI (metric) U.S. Customary Head H :         Warning: Undefined variable $headunits in /var/www/html/ponce/onlinecipoletti.php on line 164 [ H > 0 ] Length L :         Warning: Undefined variable $headunits in /var/www/html/ponce/onlinecipoletti.php on line 172 [ L > 0 ] OUTPUT: Discharge  Q :   Warning: Undefined variable $discharge in /var/www/html/ponce/onlinecipoletti.php on line 182 Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/ponce/onlinecipoletti.php on line 182 0   Warning: Undefined variable $dischargeunits in /var/www/html/ponce/onlinecipoletti.php on line 182   Your request was processed at  02:55:12 pm on April 4th, 2025   [ 250404  14:55:12 ]. Thank you for running   online_cipoletti   Please call again.   [131027]