USGS Scientific Investigations Report 2011–5191  - Seepage Investigations of the Clackamas River, Oregon 

Table 4. Streamflow gains and losses in the lower Clackamas River, Oregon, September 6–7, 2006. 

[Site number: See table 1; locations of sites are shown in figure 2. Tributaries and withdrawals are depicted in italic. Values greater than streamflow uncertainty are depicted in bold. Gain or loss is from next site upstream. Abbreviations: ft³/s, cubic foot per second; +, gain from upstream site; - , loss from next site; (a), average of two measurements; (b), from streamflow monitoring site; (c), reported; (d), estimated]  

Site number	Date and time	Streamflow  (ft³/s)	Streamflow uncertainty  (percent)	Gain or loss
Site number	Date and time	Streamflow  (ft³/s)	Streamflow uncertainty  (percent)	(ft³/s)	(percent)
6	09-06 0915	756	5
7	09-06 0955	747	5	-9	-1
8	09-06 1325	752 (a)	5	+5	+1
9	09-06 1330	732	8	-20	-3
10	09-06 1450	751	8	+19	+3
11	09-06 1000	21.0 (a)	8
12	09-06 1755	753	5	-19	-3
13	09-06 1325	714	5	-39	-5
14	09-06 1215	5.1 (a)	8
15	09-06 1655	726	5	+7	+1
17	09-06 1910	731	5	+5	+1
19	09-06 1255	793	5	+62	8
20	09-06 1600	14.9 (a)	5
22	09-06 1100	845	8	+37	+5
23	09-06 0740	1.3 (a)	11
25	09-06 0840	742	11	-104	-12
27	09-06 1000	-16 (c)	5
28	09-06 1230	766 (a)	5	+40	+5
5	09-07 0600	779 (b)	10
11, 14, 20, 23	09-07	42 (d)	8
25	09-07 1245	772	>8	-49	-6
27	09-07 1300	-17(c)	5
28	09-07 1427	800	11	45	+6