Balcones Escarpment

Table 1: Representative flood discharge of Central Texas streams compared with mean discharge of some of the world's great rivers

River/stream	(A) Drainage area (x 10³ mi²)	(B) Discharge (x 10³ cfs)	Ratio B:A
Amazon¹	2.722^a	4.200^b	2:1
Nile²	1.293^a	110^b	0.1:1
Mississippi-Missouri³	1.243.7^a	620^b	0.5:1

Texas

(Source: International Boundary and Water Commission. 1954; Crippen and Bue, 1977; Schroeder and others, 1979; Moore and others, 1982)

Peco (U.S. Hwy 90. 1954)	3.7^c	967^d	261:1
Little (Cameron, 1921)	7.1^c	647^d	91:1
North Prong of Medina (Medina, 1978)	0.07^c	123^d	1.800:1
Medina (Pipe Creek, 1978)	0.5^c	281^d	600:1
Guadalupe (Comfort, 1978)	0.8^c	240^d	300:1
Guadalupe (Spring Branch, 1978)	1.3^c	158^d	122:1
Seco (D'Harris, 1935)	0.14^c	230^d	1.500:1
Walnut (FM Hwy 1325, 1981)	0.01^c	15^d	1.500:1

^{1World's largest drainage area and discharge; second longest

²World's longest; fourth largest drainage area; tenth largest discharge

³World's third longest; fifth largest drainage area and discharge

(Source: National Oceanic and Atmospheric Administration,1971)

^{aEntire basin

^bMean discharge at month

^cContributing portion of drainage area

^dFlood discharge at point of measurement}}