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

Water quality monitoring station

32A070 - Walla Walla R nr Touchet

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)
10/6/2009	09:25	#/100ml	400	980	J	145
1/7/2009	10:25	#/100ml	400	560		40
12/5/2007	10:27	#/100ml	400	450		12
6/11/2007	12:14	#/100ml	400	520		30
9/10/2003	08:15	#/100ml	400	780	J	95
5/16/2001	10:40	#/100ml	400	1000	J	150
7/5/1998	15:35	#/100ml	400	1500		275
6/2/1997	07:50	#/100ml	400	2900		625
12/2/1996	07:30	#/100ml	400	630	J	57
Mercury, Total
date	time	units	criterion	result	remark	% exceed
2/3/1997	07:15	ug/L	0.012	0.038		217
pH
date	time	units	criterion	result	remark	% exceed
9/15/2009	09:15	pH	8.5	8.8		3
8/18/2009	09:40	pH	8.5	8.6		1
9/12/2007	15:03	pH	8.5	9.2		8
8/13/2007	11:10	pH	8.5	8.8		3
7/10/2007	11:40	pH	8.5	8.6		1
10/10/2006	12:10	pH	8.5	8.6		2
9/12/2006	12:55	pH	8.5	8.8		3
8/15/2006	12:01	pH	8.5	8.6		1
7/18/2006	11:02	pH	8.5	8.6		1
9/13/2005	12:00	pH	8.5	8.7		2
8/2/2005	13:15	pH	8.5	8.8		4
10/8/2003	11:35	pH	8.5	8.7		3
9/11/2002	12:45	pH	8.5	8.9		4
6/13/2001	10:45	pH	8.5	8.6		1
9/7/1999	17:45	pH	8.5	8.6		1
8/3/1999	17:00	pH	8.5	9		6
7/6/1999	16:00	pH	8.5	9		6
11/3/1998	17:50	pH	8.5	8.6		1
8/2/1998	17:15	pH	8.5	8.8		4
7/5/1998	15:35	pH	8.5	8.8		4
Temperature
date	time	units	criterion	result	remark	% exceed
9/15/2009	09:15	deg C	17.5	18.2		4
8/18/2009	09:40	deg C	17.5	21		20
7/7/2009	09:54	deg C	17.5	20.3		16
9/12/2007	15:03	deg C	21	21.8		4
8/13/2007	11:10	deg C	21	22.3		6
7/10/2007	11:40	deg C	21	26.2		25
8/15/2006	12:01	deg C	21	23.7		13
7/18/2006	11:02	deg C	21	22		5
8/2/2005	13:15	deg C	21	27.1		29
7/12/2005	12:20	deg C	21	24.7		18
8/4/2004	11:30	deg C	21	24		14
7/14/2004	11:10	deg C	21	23.9		14
8/6/2003	08:40	deg C	21	21.1		0
7/9/2003	07:45	deg C	21	21.1		0
8/14/2002	12:10	deg C	21	25		19
7/17/2002	12:10	deg C	21	25		19
8/8/2001	10:30	deg C	21	24.1		15
7/11/2001	12:25	deg C	21	23.9		14
8/9/2000	11:15	deg C	21	22.3		6
8/3/1999	17:00	deg C	21	25.2		20
7/6/1999	16:00	deg C	21	24		14
6/15/1999	17:30	deg C	21	25.3		20
9/13/1998	17:45	deg C	21	22.9		9
8/2/1998	17:15	deg C	21	26.2		25
7/5/1998	15:35	deg C	21	23.8		13
8/4/1997	07:05	deg C	21	23.8		13

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
Ammonia-Nitrogen
7/7/2009	09:54	mg/L	0.047		2.111111E-02	1.231875E-02	18
1/7/2009	10:25	mg/L	0.03		1.283333E-02	5.64905E-03	18
2/11/2008	10:48	mg/L	0.026		1.283333E-02	5.64905E-03	18
12/5/2007	10:27	mg/L	0.027		1.066667E-02	1.714986E-03	18
7/11/2001	12:25	mg/L	0.109		0.026	0.016	18
10/11/2000	10:35	mg/L	0.071		0.029	0.017	17
10/14/1998	09:40	mg/L	0.19		0.029	0.017	17
Barometric Pressure
date	time	units	result	remark	QMEAN	QSD	QDP
8/13/2007	11:10	mm/Hg	757.936		741.7969	6.425523	17
7/10/2007	11:40	mm/Hg	755.396		741.7969	6.425523	17
3/6/2007	10:35	mm/Hg	762.254		746.6505	7.712741	17
9/12/2006	12:55	mm/Hg	756.666		741.7969	6.425523	17
7/18/2006	11:02	mm/Hg	758.444		741.7969	6.425523	17
2/7/2006	10:50	mm/Hg	767.588		746.6505	7.712741	17
12/6/2005	12:57	mm/Hg	768.858		749.0809	8.69391	17
9/13/2005	12:00	mm/Hg	757.428		741.7969	6.425523	17
8/2/2005	13:15	mm/Hg	757.174		741.7969	6.425523	17
7/12/2005	12:20	mm/Hg	757.428		741.7969	6.425523	17
2/8/2005	11:47	mm/Hg	763.524		746.6505	7.712741	17
6/16/2004	11:10	mm/Hg	761.746		743.5494	8.729809	18
12/10/2003	11:35	mm/Hg	735.33		750.9058	7.748328	17
12/18/2002	08:40	mm/Hg	736.346		752.6498	6.960604	18
8/14/2002	12:10	mm/Hg	729.234		746.6689	5.721063	18
7/17/2002	12:10	mm/Hg	732.536		746.6689	5.721063	18
6/5/2002	12:40	mm/Hg	730.504		748.3174	7.751513	18
4/10/2002	12:55	mm/Hg	730.758		748.3174	7.751513	18
3/13/2002	12:20	mm/Hg	732.282		751.4813	6.579525	17
2/13/2002	14:15	mm/Hg	733.298		755.347	6.629	15
Conductivity
date	time	units	result	remark	QMEAN	QSD	QDP
7/7/2008	09:30	umhos/cm	219		412.5555	93.65784	18
7/10/2007	11:40	umhos/cm	525		339.1667	75.3324	18
2/6/2007	13:53	umhos/cm	172		116.3611	25.53648	18
10/10/2006	12:10	umhos/cm	417		204.3889	68.82043	18
8/15/2006	12:01	umhos/cm	554		339.1667	75.3324	18
7/18/2006	11:02	umhos/cm	512		339.1667	75.3324	18
8/2/2005	13:15	umhos/cm	551		339.1667	75.3324	18
3/8/2005	10:53	umhos/cm	237		116.3611	25.53648	18
1/4/2005	11:50	umhos/cm	179		116.3611	25.53648	18
3/13/2002	12:20	umhos/cm	70		124.5882	25.39946	17
4/14/1999	10:45	umhos/cm	402		172.333	71.206	18
Fecal Coliform Bacteria
date	time	units	result	remark	QMEAN	QSD	QDP
10/6/2009	09:25	#/100ml	980	J	71.78571	116.2591	14
1/7/2009	10:25	#/100ml	560		51.11111	47.46254	18
12/5/2007	10:27	#/100ml	450		39.5	40.8919	18
3/6/2007	10:35	#/100ml	180		47.94444	37.20606	18
7/11/2001	12:25	#/100ml	290		110	81.548	18
7/5/1998	15:35	#/100ml	1500		110	81.548	18
6/2/1997	07:50	#/100ml	2900		294.556	656.582	18
3/3/1997	07:45	#/100ml	240		80	60.362	15
12/2/1996	07:30	#/100ml	630	J	131.333	179.822	15
Flow
date	time	units	result	remark	QMEAN	QSD	QDP
12/16/1998	08:20	CFS	1060		253.688	334.686	17
7/7/1997	07:30	CFS	155		26.453	24.895	15
2/3/1997	07:15	CFS	4050		980.214	630.874	14
12/2/1996	07:30	CFS	1210		253.688	334.686	17
Nitrate+Nitrite-Nitrogen
date	time	units	result	remark	QMEAN	QSD	QDP
4/6/2009	10:46	mg/L	1.19		0.4271111	0.1525547	18
7/10/2007	11:40	mg/L	1		0.5413333	0.2181182	18
4/10/2007	11:10	mg/L	0.711		0.4070556	0.1359098	18
8/15/2006	12:01	mg/L	1.02		0.5413333	0.2181182	18
12/6/2005	12:57	mg/L	0.941		0.5628889	0.1824029	18
12/7/2004	11:48	mg/L	0.999		0.5628889	0.1824029	18
2/11/2004	10:35	mg/L	1.55		0.8692778	0.1965283	18
Nitrate-Nitrite
date	time	units	result	remark	QMEAN	QSD	QDP
12/7/1997	18:10	mg/L	1.49		0.791	0.249	17
4/7/1997	07:10	mg/L	2.12		0.781	0.531	18
3/3/1997	07:45	mg/L	1.82		1.103	0.356	16
1/13/1997	07:05	mg/L	1.9		1.103	0.356	16
Oxygen
date	time	units	result	remark	QMEAN	QSD	QDP
10/6/2008	09:20	mg/L	8.6		12.01833	1.138354	18
9/12/2007	15:03	mg/L	17.6		9.480556	2.072471	18
12/6/2005	12:57	mg/L	14.3		11.75167	1.20542	18
8/2/2005	13:15	mg/L	15.1		9.480556	2.072471	18
1/4/2005	11:50	mg/L	13.7		12.30167	0.6442164	18
6/4/2003	08:00	mg/L	7.7		10.02278	0.9942884	18
8/3/1999	17:00	mg/L	14.3		9.989	2.052	18
pH
date	time	units	result	remark	QMEAN	QSD	QDP
7/7/2009	09:54	pH	7.4		8.475	0.3562261	18
9/12/2007	15:03	pH	9.2		8.327222	0.3925903	18
3/8/2005	10:53	pH	8.3		7.782222	0.2235162	18
10/8/2003	11:35	pH	8.7		7.922778	0.4049808	18
9/13/2000	06:15	pH	7.4		8.428	0.379	18
6/14/2000	11:05	pH	7.1		8.089	0.457	18
12/15/1999	11:25	pH	7.3		8.076	0.299	17
11/17/1999	09:20	pH	7.3		8.076	0.299	17
12/16/1998	08:20	pH	7.2		8.076	0.299	17
1/13/1997	07:05	pH	6.9		7.706	0.326	16
Phosphorus, Sol Reactive
date	time	units	result	remark	QMEAN	QSD	QDP
9/12/2007	15:03	mg/L	0.017		7.485556E-02	2.402208E-02	18
8/13/2007	11:10	mg/L	0.0089		7.485556E-02	2.402208E-02	18
3/6/2007	10:35	mg/L	0.0481		7.831667E-02	1.225716E-02	18
4/5/2005	11:39	mg/L	0.0783		5.026667E-02	0.0133658	18
3/8/2005	10:53	mg/L	0.0486		7.831667E-02	1.225716E-02	18
12/18/2002	08:40	mg/L	0.115		6.618334E-02	1.925798E-02	18
Phosphorus, Total
date	time	units	result	remark	QMEAN	QSD	QDP
7/11/2001	12:25	mg/L	0.23		0.121	0.041	18
10/11/2000	10:35	mg/L	0.247		0.118	0.051	16
4/7/1997	07:10	mg/L	0.44		0.152	0.092	18
2/3/1997	07:15	mg/L	0.579	J	0.211	0.14	16
Suspended Solids
date	time	units	result	remark	QMEAN	QSD	QDP
7/7/2009	09:54	mg/L	23		6.666667	4.379095	18
4/6/2009	10:46	mg/L	438		66.44444	96.94706	18
1/7/2009	10:25	mg/L	499		98.94444	139.3858	18
4/15/2008	08:35	mg/L	408		66.44444	96.94706	18
12/5/2007	10:27	mg/L	63		8.666667	13.31518	18
4/11/2006	12:25	mg/L	426	J	50.72222	38.13876	18
4/5/2005	11:39	mg/L	141		50.72222	38.13876	18
7/11/2001	12:25	mg/L	82		35.278	22.394	18
6/2/1997	07:50	mg/L	1720		202.333	399.799	18
Temperature
date	time	units	result	remark	QMEAN	QSD	QDP
1/10/2006	12:12	deg C	0		4.488889	1.889254	18
3/8/2005	10:53	deg C	11.2		4.488889	1.889254	18
10/5/2004	12:03	deg C	14.3		6.944445	3.639202	18
3/10/2004	10:40	deg C	8.1		4.333333	1.666274	18
10/8/2003	11:35	deg C	16		7.133333	4.084404	18
9/10/2003	08:15	deg C	15.8	J	22.16667	2.863359	18
Total Persulf Nitrogen
date	time	units	result	remark	QMEAN	QSD	QDP
4/6/2009	10:46	mg/L	1.34		0.5841111	0.1629756	18
7/10/2007	11:40	mg/L	1.29		0.8119444	0.2092877	18
8/15/2006	12:01	mg/L	1.38		0.8119444	0.2092877	18
12/7/2004	11:48	mg/L	1.07		0.7246111	0.1608288	18
2/11/2004	10:35	mg/L	1.64		1.000333	0.1750257	18
10/17/2001	11:05	mg/L	0.607	J	1.109	0.187	11
9/13/2000	06:15	mg/L	0.474		0.944	0.2	12
12/15/1999	11:25	mg/L	0.723		1.109	0.187	11
11/17/1999	09:20	mg/L	0.496		1.109	0.187	11
10/13/1999	10:05	mg/L	0.587		1.109	0.187	11
11/3/1998	17:50	mg/L	0.584		1.109	0.187	11
10/14/1998	09:40	mg/L	0.574		1.109	0.187	11
12/7/1997	18:10	mg/L	1.51		1.109	0.187	11
Turbidity
date	time	units	result	remark	QMEAN	QSD	QDP
7/7/2009	09:54	NTU	8.1		3.577778	1.878221	18
4/6/2009	10:46	NTU	120		15.45	19.89905	18
1/7/2009	10:25	NTU	180		27.42222	37.01962	18
4/15/2008	08:35	NTU	150		15.45	19.89905	18
2/11/2008	10:48	NTU	130		27.42222	37.01962	18
12/5/2007	10:27	NTU	34		5.194445	4.07918	17
4/11/2006	12:25	NTU	80		12.79444	9.487854	18
4/5/2005	11:39	NTU	54		12.79444	9.487854	18
7/11/2001	12:25	NTU	52		15.867	9.833	18
6/2/1997	07:50	NTU	2700	J	172.022	631.152	18

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.