table 3

Table 3. Statistical summary of water-quality data for ungaged stream sites

[°C, degrees Celsius; µS/cm, microsiemens per centimeter at 25 degrees Celsius; mg/L, milligrams per liter; CaCO₃, calcium carbonate; Min, Minimum; Max, Maximum]

Site (fig. 1)	Water temperature (°C)			Specific conductance (µS/cm)			pH (standard units)			Dissolved oxygen (mg/L)
Site (fig. 1)	Min	Mean	Max	Min	Mean	Max	Min	Mean	Max	Min	Mean	Max
1	17.6	20.8	23.9	570	574	578	7.2	7.2	7.2	3.6	4.6	5.5
2	21.4	29.6	36.4	645	678	711	7.2	7.3	7.6	4.3	5.8	6.9
3	19.0	24.5	28.5	67.0	69.8	73.0	6.4	6.6	6.8	6.2	6.8	7.8
4	19.4	25.6	29.8	90.0	104	114	6.1	6.5	7.0	7.7	8.0	8.4
5	22.7	25.7	28.6	92.0	116	136	6.3	6.7	7.2	6.5	7.9	8.6
6	21.4	26.7	30.5	621	858	1,180	7.9	8.1	8.4	6.4	8.6	10.1
7	14.9	24.7	30.6	470	645	918	7.7	7.8	7.9	7.6	8.1	8.6
8	15.4	24.8	30.2	402	824	1,170	7.4	8.0	8.6	4.3	6.3	8.4
9	20.9	31.5	37.4	388	691	1,060	7.9	8.5	9.1	2.1	10.8	20.0
10	17.3	25.8	32.7	565	729	803	8.2	8.3	8.6	4.5	7.4	9.7
11	21.4	28.6	32.0	749	780	829	7.5	7.7	8.0	5.0	7.3	9.5
12	31.1	31.8	32.5	1,210	1,360	1,510	7.4	7.7	8.0	6.4	8.4	10.4
13	15.9	22.0	29.4	388	422	481	7.0	7.5	7.9	7.4	8.2	9.6
14	20.0	23.8	27.6	877	900	924	8.5	9.0	9.5	5.2	6.8	8.5
²15	25.9	25.9	25.9	617	617	617	7.4	7.4	7.4	7.7	7.7	7.7
16	21.0	21.1	21.3	656	783	911	7.5	7.6	7.7	5.7	6.2	6.7
17	19.8	26.1	28.8	610	773	960	7.4	7.7	8.2	5.0	5.6	5.9

Site (fig. 1)	Total suspended solids¹ (mg/L)			Hardness¹ (mg/L as CaCO₃)			Dissolved chloride¹ (mg/L)
Site (fig. 1)	Min	Mean	Max	Min	Mean	Max	Min	Mean	Max
1	9.6	11.4	13.2	70.0	140	211	46.6	50.0	53.1
2	2.0	5.7	9.2	111	132	143	59.8	73.4	84.2
3	3.0	5.2	6.8	11.9	13.6	15.9	12.2	13.2	13.9
4	2.8	6.4	9.6	17.9	19.8	21.1	16.3	19.2	20.6
5	5.2	8.5	14.8	25.5	32.3	39.0	14.0	15.5	17.0
6	25.8	46.9	68.0	126	130	134	99.3	122	145
7	2.0	27.6	100	118	183	273	62.8	78.0	104
8	16.0	29.2	42.8	122	215	310	52.6	130	181
9	18.0	27.0	42.4	89.2	117	158	23.7	55.8	72.7
10	23.5	41.7	60.0	125	168	211	74.1	100	117
11	10.0	14.7	20.8	168	172	179	90.7	93.8	96.3
12	14.0	18.6	23.2	213	244	276	192	249	306
13	33.4	86.2	139	138	145	152	28.3	37.6	46.9
14	86.0	126	165	156	176	196	133	141	150
²15	83.2	83.2	83.2	174	174	174	83.0	83.0	83.0
16	16.8	29.9	43.0	230	237	244	61.4	87.2	113
17	37.0	54.3	88.0	188	217	234	78.6	124	170

¹Analyses by City of Houston Wastewater Quality Control Laboratory.
²Summary statistics from one sample.

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