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

2.722a

4.200b

2:1

Nile2

1.293a

110b

0.1:1

Mississippi-Missouri3

1.243.7a

620b

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)

3.7c

967d

261:1

Little (Cameron, 1921)

7.1c

647d

91:1

North Prong of Medina (Medina, 1978)

0.07c

123d

1.800:1

Medina (Pipe Creek, 1978)

0.5c

281d

600:1

Guadalupe (Comfort, 1978)

0.8c

240d

300:1

Guadalupe (Spring Branch, 1978)

1.3c

158d

122:1

Seco (D'Harris, 1935)

0.14c

230d

1.500:1

Walnut (FM Hwy 1325, 1981)

0.01c

15d

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