Arroyo Tecate (31403) immediately downstream of Tecate.

Table B-9. Flood discharges (m³ s^-1) calculated for Arroyo Alamar with and without infiltration in the channelization project reach (40117).

Return period 2 5 10 25 50 100 200 500 1000

1. Discharge without infiltration (m³s^-1) 283 537 692 938 1146 1319 1429 1609 1735

2. Discharge with infiltration (m³s^-1) 277 529 683 928 1135 1308 1417 1596 1722

3. Difference (m³s^-1) 6 8 9 10 11 11 12 13 13

4. Runoff volume without infiltration (hm³) 9.982 20.291 27.279 40.338 52.007 70.083 83.003 106.510 127.793

5. Runoff volume with infiltration (hm³) 9.523 19.692 26.613 39.545 51.087 68.972 81.805 104.680 125.709

6. Difference in runoff volume (hm³) 0.459 0.599 0.657 0.793 0.920 1.111 1.198 1.830 2.084

7. Percentage [(6/4)x100] 4.60 2.95 2.41 1.97 1.77 1.59 1.44 1.72 1.63

Return period	2	5	10	25	50	100	200	500	1000
1. Discharge without infiltration (m³s^-1)	283	537	692	938	1146	1319	1429	1609	1735
2. Discharge with infiltration (m³s^-1)	277	529	683	928	1135	1308	1417	1596	1722
3. Difference (m³s^-1)	6	8	9	10	11	11	12	13	13
4. Runoff volume without infiltration (hm³)	9.982	20.291	27.279	40.338	52.007	70.083	83.003	106.510	127.793
5. Runoff volume with infiltration (hm³)	9.523	19.692	26.613	39.545	51.087	68.972	81.805	104.680	125.709
6. Difference in runoff volume (hm³)	0.459	0.599	0.657	0.793	0.920	1.111	1.198	1.830	2.084
7. Percentage [(6/4)x100]	4.60	2.95	2.41	1.97	1.77	1.59	1.44	1.72	1.63