A Physically Based Runoff Model Analysis of the Querétaro River Basin

Table 4

SHETRAN peak discharge and volume calculated data. Significant differences are observed from daily (D) and monthly (M) methods where Thornthwaite and Hamon overestimate volume; on the other hand Blaney, Hargreaves, and Papadakys underestimate the calculated total volume (31.10%, 37.92%, and 46.83%, resp.).

ETp method	SHETRAN	Blaney; (D)	Hamon; (D)	Hargreaves; (D)	Papadakys; (M)	Thornthwaite; (M)
Volume × 1000 m^3	76,273.78	23,667.24	393,299.12	31,176.94	32,809.94	291,799.56
Peak discharge (m^3s^−1)	60.58	18.84	191.24	22.97	28.37	132.35
Peak discharge percent	—	−68.90%	315.68%	−62.08%	−53.17%	218.47%
Total volume percent	—	−68.97%	515.64%	−59.12%	−56.98%	382.57%