Scientific Investigations Report 2007–5186
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5186
Table 19. Flow-adjusted trends in concentration, non-flow-adjusted trends in concentration, and trends in annual loads for total nitrogen in the Columbia River and Puget Sound basins, water years 1993–2003.
[Sites can be located in figure 1 by the Map index No. Bold values indicate trends significant at a less than or equal to 0.05 p-level. Abbreviations: FATC, flow-adjusted trends in concentration; NFATC, non-flow-adjusted trends in concentration]
| Map index No. | Site No. | Water quality | FATC | NFATC | Load trend | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Start date | End date | Number of observations | Number of observations below reporting limit | Percent per year | Milligrams per liter per year | Percent per year | Milligrams per liter per year | Percent per year | Kilograms per day per year | |||||
| 7 | 10355 | 10-20-92 | 08-12-03 | 126 | 57 | -4.58 | -0.020 | -4.53 | -0.020 | -5.06 | -497 | |||
| 8 | 11140 | 10-20-92 | 08-12-03 | 55 | 0 | -4.16 | -.042 | -4.01 | -.040 | -5.36 | -42.9 | |||
| 10 | 10508 | 11-01-93 | 09-22-03 | 69 | 49 | -2.55 | -.005 | -2.57 | -.005 | -2.43 | -9.70 | |||
| 11 | 10350 | 10-21-92 | 08-12-03 | 126 | 22 | -4.63 | -.037 | -4.53 | -.036 | -5.24 | -1,180 | |||
| 13 | 11478 | 10-14-92 | 09-03-03 | 63 | 32 | -3.38 | -.010 | -3.48 | -.010 | -6.07 | -52.5 | |||
| 14 | 10555 | 10-21-92 | 08-12-03 | 128 | 10 | -4.81 | -.044 | -4.74 | -.043 | -5.41 | -2,260 | |||
| 15 | 14200400 | 10-14-93 | 09-03-03 | 98 | 1 | -.17 | -.001 | -.580 | -.003 | -2.40 | -.564 | |||
| 16 | 14201300 | 10-04-93 | 09-03-03 | 129 | 0 | 2.40 | .221 | 1.10 | .102 | -3.97 | -5.88 | |||
| 19 | 3701002 | 10-05-92 | 09-29-03 | 404 | 0 | .58 | .016 | .550 | .015 | .798 | 39.6 | |||
| 23 | 11321 | 10-28-92 | 08-11-03 | 56 | 0 | -2.82 | -.128 | -2.47 | -.112 | -4.00 | -24.6 | |||
| 25 | 3701612 | 10-01-92 | 09-29-03 | 430 | 80 | -3.07 | -.017 | -2.91 | -.016 | -2.04 | -6.69 | |||
| 31 | 10611 | 10-21-92 | 08-11-03 | 132 | 0 | -3.61 | -.042 | -3.57 | -.042 | -4.42 | -3,400 | |||
| 33 | 14211720 | 11-16-92 | 09-10-03 | 145 | 1 | -.225 | -.002 | -.330 | -.003 | -1.65 | -845 | |||
| 37 | 10332 | 10-21-92 | 08-06-03 | 57 | 0 | -2.04 | -.020 | -2.012 | -.019 | -3.09 | -1,970 | |||
| 39 | 10411 | 10-26-92 | 08-18-03 | 63 | 19 | -2.26 | -.007 | -2.261 | -.007 | -2.25 | -97.2 | |||
| 40 | 10616 | 10-21-92 | 08-06-03 | 57 | 13 | -2.63 | -.012 | -2.630 | -.012 | -3.10 | -6,000 | |||
| 42 | 12012 | 06-21-93 | 08-18-03 | 60 | 16 | -3.34 | -.013 | -3.35 | -.013 | -3.63 | -27.0 | |||
| 43 | 11489 | 10-26-92 | 08-18-03 | 76 | 0 | -3.56 | -.095 | -3.98 | -.106 | -2.87 | -38.6 | |||
| 44 | 14246900 | 11-19-92 | 09-08-03 | 118 | 22 | -.665 | -.003 | -0.832 | -.004 | -1.89 | -5,080 | |||
| 46 | 32A070 | 10-11-93 | 09-10-03 | 118 | 0 | -3.81 | -.043 | -3.84 | -.044 | -4.07 | -30.2 | |||
| 48 | 37A090 | 10-12-93 | 09-10-03 | 119 | 0 | -2.23 | -.026 | -2.40 | -.028 | -1.64 | -128 | |||
| 51 | 12472900 | 11-17-92 | 09-25-03 | 70 | 52 | -2.21 | -.005 | -2.20 | -.005 | -2.48 | -1,580 | |||
| 52 | 13351000 | 12-21-92 | 09-03-03 | 164 | 0 | .214 | .004 | .631 | .011 | 3.03 | 27.4 | |||
| 53 | 34A070 | 10-04-93 | 09-09-03 | 116 | 0 | -1.53 | -.023 | -1.08 | -.017 | .905 | 7.24 | |||
| 54 | 41A070 | 10-12-93 | 09-10-03 | 117 | 0 | -.624 | -.012 | .167 | .003 | -2.82 | -36.9 | |||
| 57 | 10A070 | 10-27-93 | 09-24-03 | 118 | 0 | -2.70 | -.008 | -2.70 | -.007 | -2.02 | -36.0 | |||
| 61 | 16A070 | 10-25-93 | 09-23-03 | 118 | 1 | -5.00 | -.005 | -5.00 | -.005 | -4.48 | -7.48 | |||
| 63 | 09A190 | 10-18-93 | 09-24-03 | 119 | 1 | -.762 | -.001 | -.666 | -.001 | -1.76 | -3.27 | |||
| 64 | 45A070 | 10-12-93 | 09-08-03 | 118 | 0 | -2.54 | -.004 | -2.43 | -.004 | -2.73 | -19.9 | |||
| 66 | 09A080 | 10-20-93 | 09-24-03 | 117 | 0 | -2.47 | -.013 | -2.35 | -.012 | -3.15 | -38.2 | |||
| 70 | 45A110 | 10-12-93 | 09-08-03 | 114 | 3 | -2.14 | -.001 | -2.23 | -.001 | -2.54 | -7.98 | |||
| 71 | 16C090 | 10-25-93 | 09-23-03 | 115 | 13 | .736 | .000 | .658 | .000 | .256 | .067 | |||
| 73 | 54A120 | 10-05-93 | 09-08-03 | 118 | 0 | 1.84 | .008 | 2.36 | .011 | 1.62 | 76.7 | |||
| 76 | 07A090 | 10-19-93 | 09-22-03 | 120 | 0 | -1.00 | -.003 | -.996 | -.003 | -1.07 | -55.6 | |||
| 78 | 48A070 | 10-13-93 | 09-09-03 | 119 | 0 | -1.88 | -.003 | -1.26 | -.002 | -2.55 | -7.78 | |||
| 79 | 49A070 | 10-13-93 | 09-09-03 | 117 | 0 | -2.12 | -.003 | -2.17 | -.003 | -4.94 | -42.7 | |||
| 81 | 03A060 | 10-19-93 | 09-22-03 | 118 | 1 | .079 | .000 | .090 | .000 | .147 | 6.60 | |||
| 84 | 01A050 | 10-19-93 | 09-23-03 | 118 | 0 | -.005 | -.000 | -.021 | -.000 | .512 | 12.8 | |||
| 87 | 61A070 | 10-06-93 | 09-07-03 | 119 | 0 | -1.45 | -.002 | -1.45 | -.002 | -1.29 | -402 | |||
| 89 | 13092747 | 10-14-93 | 09-23-03 | 105 | 0 | -1.93 | -.038 | .129 | .003 | -4.53 | -29.4 | |||
| 91 | 13154500 | 11-04-92 | 09-24-03 | 138 | 0 | -.487 | -.007 | .193 | .003 | -1.71 | -658 | |||
| 93 | 13206000 | 11-02-92 | 09-16-03 | 93 | 6 | 2.09 | .012 | 2.12 | .012 | 2.05 | 19.5 | |||
| 97 | 12413470 | 11-18-92 | 09-08-03 | 115 | 47 | 1.541 | .004 | 1.63 | .004 | 1.38 | 2.52 | |||
| 99 | 12419000 | 10-07-92 | 09-03-03 | 111 | 88 | 1.288 | .002 | 1.44 | .002 | .091 | 1.20 | |||
U.S. Department of the Interior | U.S. Geological Survey
URL: https://pubs.usgs.gov/sir/2007/5186
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