
Figure 1. Number of streamgages, out of a total of 395, with statistically significant (p<0.05) trends for the 50year period 19441993. 
Years of Record  

30  40  50  60  70  80  
Beginning year Ending year Stations tested 
1993 395 
1993 395 
1993 395 
1993 193 
1993 70 
1993 34 
Annual minimum (daily mean) discharge  
No. of significant trends (p<0.05) Percent with significant trends No. with increasing trend No. with decreasing trend 
28 74 38 
45 145 32 
41 127 36 
44 76 9 
49 32 2 
38 10 3 
Annual 10^{th} percentile of daily discharge  
No. of significant trends (p<0.05) Percent with significant trends No. with increasing trend No. with decreasing trend 
26 63 38 
39 132 23 
36 117 26 
46 80 9 
46 30 2 
35 8 4 
Annual 30^{th} percentile of daily discharge  
No. of significant trends (p<0.05) Percent with significant trends No. with increasing trend No. with decreasing trend 
28 76 33 
41 148 12 
34 125 10 
42 79 2 
40 27 1 
26 8 1 
Annual 50^{th} percentile of daily discharge  
No. of significant trends (p<0.05) Percent with significant trends No. with increasing trend No. with decreasing trend 
25 76 22 
44 167 7 
29 113 3 
42 81 1 
39 26 1 
29 9 1 
Annual 70^{th} percentile of daily discharge  
No. of significant trends (p<0.05) Percent with significant trends No. with increasing trend No. with decreasing trend 
15 55 4 
33 124 6 
16 61 3 
30 58 0 
27 19 0 
18 6 0 
Annual 90^{th} percentile of daily discharge  
No. of significant trends (p<0.05) Percent with significant trends No. with increasing trend No. with decreasing trend 
11 18 25 
24 76 18 
10 23 17 
10 19 1 
14 10 0 
15 5 0 
Annual maximum (daily mean) discharge  
No. of significant trends (p<0.05) Percent with significant trends No. with increasing trend No. with decreasing trend 
9 12 25 
13 31 22 
9 14 21 
10 11 9 
13 5 4 
12 2 2 