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environmental information > river & stream WQ monitoring > state network >

Water quality monitoring station*

34B110 - SF Palouse R @ Pullman

* This station is also a flow monitoring station

Results that exceed water quality criteria or the usual range of data (since October, 1996)

Results that exceeded water quality standards criteria

The Department of Ecology places limits on how much pollution is allowed in our rivers to protect public health and enjoyment, and to support fish, shellfish, and wildlife (WAC 173-201A). Individual results for temperature, pH, oxygen, fecal coliform bacteria, and metals (where sampled) that are higher than these criteria are listed below. (The standards do not contain criteria for other types of water quality constituents.) This table includes only results from our monthly monitoring program. Results from other monitoring, such as continuous monitoring for temperature, are not evaluated here.

Exceeding a criterion does not necessarily mean the water quality standard has been violated. Often, other �pollution� conditions must exist for a stream segment to be in violation of water quality standards. In some cases, standards require that the source of pollution be human activities rather than natural causes. Also, more than a single result exceeding a criterion may be required.

Washington's Water Quality Standards were amended in November, 2006. Data in the tables below are based on the older standards through 2008. Data collected after 2008 are based on the ammended standards, excluding supplemental temperature criteria. We are currently working on incorporating supplemental temperature criteria into our evaluation procedures.

date	time	units	criterion	result	remark	% exceed
Fecal Coliform Bacteria (exceeding the ten percent criterion)
8/5/2009	09:30	#/100ml	200	210	J	5
6/3/2009	09:30	#/100ml	200	350		75
5/6/2009	09:22	#/100ml	200	750		275
1/7/2009	09:30	#/100ml	200	1400	J	600
12/3/2008	08:55	#/100ml	200	280		40
8/6/2008	09:30	#/100ml	200	500		150
2/13/2008	09:45	#/100ml	200	450		125
12/3/2007	09:30	#/100ml	200	1400	J	600
8/21/2007	09:15	#/100ml	200	2300	J	1050
7/16/2007	10:05	#/100ml	200	270		35
8/9/2006	12:10	#/100ml	200	3800	J	1800
7/12/2006	11:40	#/100ml	200	410		105
1/11/2006	12:05	#/100ml	200	900		350
11/9/2005	11:35	#/100ml	200	2400		1100
10/5/2005	12:00	#/100ml	200	4100		1950
9/14/2005	10:20	#/100ml	200	350		75
8/3/2005	11:00	#/100ml	200	350		75
7/13/2005	10:50	#/100ml	200	2300	J	1050
5/4/2005	11:00	#/100ml	200	3800	J	1800
12/8/2004	10:55	#/100ml	200	500		150
9/15/2004	11:40	#/100ml	200	1500	J	650
8/3/2004	12:40	#/100ml	200	310	J	55
9/9/2003	12:05	#/100ml	200	7200	J	3500
8/5/2003	12:45	#/100ml	200	720		260
7/8/2003	11:40	#/100ml	200	9500	J	4650
12/17/2002	12:10	#/100ml	200	830	J	315
8/13/2002	14:00	#/100ml	200	300		50
7/16/2002	14:30	#/100ml	200	300		50
6/4/2002	14:00	#/100ml	200	470		135
4/9/2002	14:20	#/100ml	200	420	J	110
3/12/2002	14:05	#/100ml	200	500		150
2/12/2002	15:20	#/100ml	200	230		15
8/7/2001	12:40	#/100ml	200	260		30
7/10/2001	13:55	#/100ml	200	390		95
5/15/2001	12:35	#/100ml	200	2700	J	1250
8/8/2000	12:25	#/100ml	200	1000		400
7/11/2000	09:35	#/100ml	200	410		105
6/13/2000	11:20	#/100ml	200	640	J	220
2/8/2000	05:40	#/100ml	200	240		20
12/14/1999	09:40	#/100ml	200	340		70
8/9/1999	07:15	#/100ml	200	8500	J	4150
7/12/1999	07:15	#/100ml	200	570		185
6/7/1999	07:20	#/100ml	200	320		60
3/8/1999	07:10	#/100ml	200	230		15
2/8/1999	07:00	#/100ml	200	210		5
1/11/1999	07:00	#/100ml	200	620		210
12/7/1998	06:30	#/100ml	200	260	J	30
8/3/1998	07:40	#/100ml	200	770		285
7/6/1998	08:55	#/100ml	200	390		95
6/8/1998	08:00	#/100ml	200	2700	J	1250
4/14/1998	09:50	#/100ml	200	660	J	230
9/8/1997	14:40	#/100ml	200	210		5
8/4/1997	15:10	#/100ml	200	290		45
7/7/1997	13:35	#/100ml	200	210		5
6/2/1997	15:20	#/100ml	200	4400		2100
2/3/1997	13:35	#/100ml	200	370	J?	85
12/2/1996	13:35	#/100ml	200	250	J?	25
11/4/1996	13:10	#/100ml	200	310		55
10/7/1996	13:05	#/100ml	200	730	J	265
Oxygen
date	time	units	criterion	result	remark	% exceed
9/16/2009	09:40	mg/L	8	7.8		3
8/5/2009	09:30	mg/L	8	6.1		24
9/10/2008	09:15	mg/L	8	7.3		8
8/6/2008	09:30	mg/L	8	6.9		14
10/10/2007	09:15	mg/L	8	7.1		12
9/4/2007	09:20	mg/L	8	5.8		27
8/21/2007	09:15	mg/L	8	5.1		36
7/16/2007	10:05	mg/L	8	5.7		29
8/9/2006	12:10	mg/L	8	6		25
6/7/2006	11:55	mg/L	8	7.6		5
8/3/2005	11:00	mg/L	8	7.1		11
7/13/2005	10:50	mg/L	8	7.6		4
5/4/2005	11:00	mg/L	8	7.8		2
9/15/2004	11:40	mg/L	8	7.7		4
8/3/2004	12:40	mg/L	8	7.4		8
9/9/2003	12:05	mg/L	8	7.6		5
8/5/2003	12:45	mg/L	8	7		12
7/8/2003	11:40	mg/L	8	6.5		18
8/9/1999	07:15	mg/L	8	4.6		43
7/12/1999	07:15	mg/L	8	6.3		21
9/14/1998	07:50	mg/L	8	7.3		9
8/3/1998	07:40	mg/L	8	5.6		30
7/6/1998	08:55	mg/L	8	7.7		4
pH
date	time	units	criterion	result	remark	% exceed
5/3/2006	11:00	pH	8.5	8.8		4
5/6/2003	12:20	pH	8.5	8.6		1
5/13/2002	14:25	pH	8.5	9		6
7/10/2001	13:55	pH	8.5	8.6		1
Temperature
date	time	units	criterion	result	remark	% exceed
8/5/2009	09:30	deg C	17.5	18.5		6
7/16/2007	10:05	deg C	18	18.5		3
8/9/2006	12:10	deg C	18	19		6
6/7/2006	11:55	deg C	18	18.3		2
7/13/2005	10:50	deg C	18	18.6		3
8/5/2003	12:45	deg C	18	19.2		7
7/8/2003	11:40	deg C	18	19.2		7
7/16/2002	14:30	deg C	18	22		22
6/4/2002	14:00	deg C	18	18.7		4
8/7/2001	12:40	deg C	18	20.6		14
7/10/2001	13:55	deg C	18	23.6		31
8/3/1998	07:40	deg C	18	18.4		2
8/4/1997	15:10	deg C	18	23.3		29
7/7/1997	13:35	deg C	18	20.7		15

Results that contrast strongly with historical data

Results exceeding the usual range of data (defined as 2 standard deviations beyond the mean value for a station based on data from the same three-month period over the previous six years) are shown below. A certain percentage of results will always be listed in this report. Inclusion here does not necessarily indicate something unique is occurring in the watershed.

date	time	units	result	remark	QMEAN	QSD	QDP
Alkalinity
12/3/2007	09:30	mg/L	61.4		149.5	27.3313	4
Ammonia-Nitrogen
date	time	units	result	remark	QMEAN	QSD	QDP
1/7/2009	09:30	mg/L	0.247		2.927778E-02	2.299055E-02	18
2/13/2008	09:45	mg/L	0.09		2.927778E-02	2.299055E-02	18
5/4/2005	11:00	mg/L	0.287		5.566667E-02	7.600155E-02	18
7/8/2003	11:40	mg/L	0.173		3.611111E-02	3.049183E-02	18
Barometric Pressure
date	time	units	result	remark	QMEAN	QSD	QDP
9/13/2006	10:50	mm/Hg	712.47	J	698.462	6.214566	18
8/9/2006	12:10	mm/Hg	712.47		698.462	6.214566	18
8/3/2005	11:00	mm/Hg	713.232		698.462	6.214566	18
12/8/2004	10:55	mm/Hg	680.974		700.1659	5.902122	18
11/3/2004	11:55	mm/Hg	722.376	J	699.9099	6.196245	18
6/15/2004	12:45	mm/Hg	712.47		696.453	4.906237	18
12/17/2002	12:10	mm/Hg	684.022		701.3239	5.066619	18
6/4/2002	14:00	mm/Hg	689.61		699.9943	4.23215	18
5/13/2002	14:25	mm/Hg	689.61		699.9943	4.23215	18
4/9/2002	14:20	mm/Hg	686.562		699.9943	4.23215	18
Conductivity
date	time	units	result	remark	QMEAN	QSD	QDP
8/21/2007	09:15	umhos/cm	714		496.5	92.21793	18
6/18/2007	08:55	umhos/cm	551		325.0555	64.63788	18
5/14/2007	09:10	umhos/cm	466		325.0555	64.63788	18
10/4/2006	10:50	umhos/cm	706		493.6111	102.1948	18
9/13/2006	10:50	umhos/cm	707		496.5	92.21793	18
8/9/2006	12:10	umhos/cm	696		496.5	92.21793	18
12/7/2005	11:30	umhos/cm	851		493.6111	102.1948	18
9/14/2005	10:20	umhos/cm	721		496.5	92.21793	18
8/3/2005	11:00	umhos/cm	689		496.5	92.21793	18
6/8/2005	10:40	umhos/cm	456		325.0555	64.63788	18
3/16/2005	10:35	umhos/cm	532		275.9	100.082	20
2/9/2005	11:20	umhos/cm	478		275.9	100.082	20
1/5/2005	11:15	umhos/cm	601		275.9	100.082	20
10/7/2003	12:40	umhos/cm	643		467.3889	87.60482	18
6/3/2003	12:00	umhos/cm	421		293.6667	57.68882	18
10/15/2002	10:40	umhos/cm	644		467.3889	87.60482	18
2/13/2001	12:30	umhos/cm	473		293.545	88.351	11
Fecal Coliform Bacteria
date	time	units	result	remark	QMEAN	QSD	QDP
1/7/2009	09:30	#/100ml	1400	J	142.3333	223.6008	18
1/11/2006	12:05	#/100ml	900		148.9444	173.0449	18
11/9/2005	11:35	#/100ml	2400		126.4444	198.9041	18
10/5/2005	12:00	#/100ml	4100		126.4444	198.9041	18
5/4/2005	11:00	#/100ml	3800	J	312.3889	621.7961	18
9/9/2003	12:05	#/100ml	7200	J	835.2941	1988.91	17
7/8/2003	11:40	#/100ml	9500	J	835.2941	1988.91	17
12/17/2002	12:10	#/100ml	830	J	166.2778	174.478	18
6/2/1997	15:20	#/100ml	4400		739.333	1300.159	12
Nitrate+Nitrite-Nitrogen
date	time	units	result	remark	QMEAN	QSD	QDP
9/10/2008	09:15	mg/L	6.03		2.003556	1.660072	18
3/5/2008	09:35	mg/L	9.96		5.825	2.036119	18
11/6/2007	09:15	mg/L	6.65		3.202778	1.460519	18
8/21/2007	09:15	mg/L	6.42		1.976389	1.738316	18
2/9/2005	11:20	mg/L	3.29		6.841111	1.603899	18
1/5/2005	11:15	mg/L	2.74		6.841111	1.603899	18
10/7/2003	12:40	mg/L	2.36		6.106667	1.608123	18
1/7/2003	11:45	mg/L	3.9		7.083889	1.189489	18
Nitrate-Nitrite
date	time	units	result	remark	QMEAN	QSD	QDP
12/17/2002	12:10	mg/L	1.56		6.106667	1.608123	18
10/15/2002	10:40	mg/L	2.35		6.106667	1.608123	18
6/4/2002	14:00	mg/L	1.14		4.215222	1.186368	18
5/13/2002	14:25	mg/L	1.81		4.215222	1.186368	18
5/15/2001	12:35	mg/L	2.21		4.917	0.968	11
6/13/2000	11:20	mg/L	2.16		4.917	0.968	11
8/9/1999	07:15	mg/L	0.097		3.365	1.498	12
7/12/1999	07:15	mg/L	0.173		3.365	1.498	12
3/8/1999	07:10	mg/L	9.92		6.625	1.602	11
12/7/1998	06:30	mg/L	9.88		5.479	1.875	12
9/14/1998	07:50	mg/L	8.53		3.365	1.498	12
6/8/1998	08:00	mg/L	2.36		4.917	0.968	11
Oxygen
date	time	units	result	remark	QMEAN	QSD	QDP
10/10/2007	09:15	mg/L	7.1		10.91056	1.478033	18
6/7/2006	11:55	mg/L	7.6		10.51167	1.29501	18
5/4/2005	11:00	mg/L	7.8		10.51167	1.29501	18
2/9/2005	11:20	mg/L	14.9		11.97333	0.7561824	18
5/6/2003	12:20	mg/L	12.7		10.09444	1.282531	18
5/13/2002	14:25	mg/L	12.5	J	9.637777	1.254749	18
2/13/2001	12:30	mg/L	13.5		11.673	0.75	11
12/12/2000	12:50	mg/L	13.2		9.85	1.656	12
pH
date	time	units	result	remark	QMEAN	QSD	QDP
1/11/2006	12:05	pH	7.2		7.7315	0.1954287	20
3/16/2005	10:35	pH	8.2		7.7315	0.1954287	20
2/9/2005	11:20	pH	8.3		7.7315	0.1954287	20
5/13/2002	14:25	pH	9		7.828889	0.3101402	18
5/9/2000	08:45	pH	7.1		7.95	0.421	12
2/8/2000	05:40	pH	7.3		7.764	0.216	11
11/16/1999	09:05	pH	6.9		7.825	0.218	12
Phosphorus, Sol Reactive
date	time	units	result	remark	QMEAN	QSD	QDP
1/7/2009	09:30	mg/L	0.254		0.1458722	4.116166E-02	18
11/13/2002	12:25	mg/L	0.0273		1.138778	0.5333761	18
Phosphorus, Total
date	time	units	result	remark	QMEAN	QSD	QDP
1/11/1999	07:00	mg/L	1.6		0.491	0.352	10
Suspended Solids
date	time	units	result	remark	QMEAN	QSD	QDP
5/6/2009	09:22	mg/L	40		9.944445	10.61892	18
4/8/2009	09:25	mg/L	59		9.944445	10.61892	18
1/7/2009	09:30	mg/L	508		63.05556	137.9401	18
7/9/2008	09:30	mg/L	33		4.777778	2.941699	18
12/3/2007	09:30	mg/L	30		5.5	7.994483	18
6/7/2006	11:55	mg/L	34		10.94444	6.725476	18
5/4/2005	11:00	mg/L	39		10.94444	6.725476	18
12/8/2004	10:55	mg/L	19		5.388889	6.353683	18
10/6/2004	11:17	mg/L	33		6.388889	6.390608	18
12/14/1999	09:40	mg/L	28		10.167	8.809	12
1/11/1999	07:00	mg/L	830		175.727	314.584	11
6/2/1997	15:20	mg/L	3740		327.583	1074.694	12
11/4/1996	13:10	mg/L	28		10.167	8.809	12
Temperature
date	time	units	result	remark	QMEAN	QSD	QDP
3/24/2004	09:15	deg C	7.5		2.144444	1.759753	18
3/9/2004	12:40	deg C	7		2.144444	1.759753	18
10/7/2003	12:40	deg C	13.6		5.266667	3.815449	18
6/4/2002	14:00	deg C	18.7		10.55556	3.825183	18
7/10/2001	13:55	deg C	23.6		17.108	2.806	12
9/13/1999	07:30	deg C	9.2		17.108	2.806	12
4/5/1999	07:40	deg C	2.4		12.458	4.217	12
8/4/1997	15:10	deg C	23.3		17.108	2.806	12
Total Persulf Nitrogen
date	time	units	result	remark	QMEAN	QSD	QDP
9/10/2008	09:15	mg/L	6.38		2.441833	1.61035	18
2/9/2005	11:20	mg/L	3.57		7.535294	1.784447	17
1/5/2005	11:15	mg/L	3.22		7.535294	1.784447	17
10/7/2003	12:40	mg/L	3.29		6.757222	1.601513	18
1/7/2003	11:45	mg/L	4.02		7.895882	1.270792	17
12/17/2002	12:10	mg/L	2.62		6.757222	1.601513	18
11/13/2002	12:25	mg/L	3.44		6.757222	1.601513	18
10/15/2002	10:40	mg/L	2.81		6.757222	1.601513	18
6/4/2002	14:00	mg/L	1.42		4.902222	1.304786	18
12/4/2001	12:50	mg/L	3.15		6.703	1.467	9
5/15/2001	12:35	mg/L	3.23		5.898	1.15	8
6/13/2000	11:20	mg/L	2.52		5.898	1.15	8
11/2/1998	06:15	mg/L	10.1		6.703	1.467	9
9/14/1998	07:50	mg/L	8.56		3.8	1.732	9
6/8/1998	08:00	mg/L	3.09		5.898	1.15	8
5/4/1998	07:55	mg/L	3.24		5.898	1.15	8
Turbidity
date	time	units	result	remark	QMEAN	QSD	QDP
5/6/2009	09:22	NTU	60		15.05	19.51525	18
4/8/2009	09:25	NTU	65		15.05	19.51525	18
12/3/2007	09:30	NTU	55		8.233334	11.43148	18
6/7/2006	11:55	NTU	80		13.54444	9.740952	18
4/6/2005	11:30	NTU	34		13.54444	9.740952	18
12/14/1999	09:40	NTU	110		22.45	26.419	12
1/11/1999	07:00	NTU	1500		236.364	493.668	11
6/2/1997	15:20	NTU	8000	J	682.642	2304.408	12
12/2/1996	13:35	NTU	85		22.45	26.419	12

Note: QMEAN, QSD, and QDP are the quarterly mean, standard deviation, and number of data points for the last six years, where available, for the station shown.

Washington State Department of Ecology

Data users please read disclaimer.

Questions or comments on content may be sent to Dave Hallock
Questions or comments on presentation may be sent to Steve Barrett.