PLATEAU CREEK BASIN

09105000 PLATEAU CREEK NEAR CAMEO, CO-Continued

WATER-QUALITY RECORDS

PERIOD OF RECORD.--November 1968 to August 1979, November 1993 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09105000

PERIOD OF DAILY RECORD.--

SPECIFIC CONDUCTANCE: June 1994 to current year.

WATER TEMPERATURE: June 1994 to current year.

INSTRUMENTATION.--Water-quality monitor since June 1994.

REMARKS.-- Daily record of specific conductance is good, except for the periods Dec. 20 to Jan. 12, Jan. 16-21, Feb. 6-12, Feb. 20 to Apr. 12, and Sept. 9, which are fair, and Oct. 1-3, Oct. 17-31, and Sept. 10-30, which are poor. Daily record of water temperature is good. Interruptions in daily record are due to sensor fouling or missing transmissions. Daily maximum and minimum specific conductance data from June 1994 to Sept. 1995 are available in district office.

EXTREMES FOR PERIOD OF DAILY RECORD.--

SPECIFIC CONDUTANCE: Maximum recorded, 2,220 microsiemens/cm, Sept. 9, 2003, minimum, 160 microsiemens/cm several days in June 1995.

WATER TEMPERATURE: Maximum, 32.1°C, July 11, 2002; minimum, 0.0°C, on many days during winter months.

EXTREMES FOR CURRENT YEAR.--

SPECIFIC CONDUCTANCE: Maximum, 2,220 microsiemens/cm, Sept. 9; minimum, 189 microsiemens/cm, May 23.

WATER TEMPERATURE: Maximum, 31.1°C, July 18; minimum, 0.0°C, on many days.

WATER-QUALITY DATA, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

Date	Time	Instan- taneous dis- charge, cfs (00061)	Dis- solved oxygen, mg/L (00300)	pH, water, unfltrd field, std units (00400)	Specif. conduc- tance, wat unf uS/cm 25 degC (00095)	Temper- ature, water, deg C (00010)	Hard- ness, water, unfltrd mg/L as CaCO3 (00900)	Calcium water, fltrd, mg/L (00915)	Magnes- ium, water, fltrd, mg/L (00925)	Potas- sium, water, fltrd, mg/L (00935)	Sodium adsorp- tion ratio (00931)	Sodium, water, fltrd, mg/L (00930)	Alka- linity, wat flt fxd end lab, mg/L as CaCO3 (29801)
OCT
17...	0930	38	10.4	8.3	760	5.5	300	54.6	39.9	5.30	2	65.5	E315
DEC
19...	1230	40	12.5	8.7	778	0.0	320	61.5	40.2	5.05	2	68.3	--
FEB
19...	1315	49	10.4	8.5	760	5.5	300	60.3	35.5	5.48	2	64.8	--
MAR
11...	1230	57	9.8	8.4	751	9.5	290	56.6	35.7	4.43	2	69.1	292
APR
24...	1335	111	8.8	8.4	504	13.6	200	48.6	18.8	3.16	1	32.6	217
MAY
16...	1140	412	8.9	8.2	334	13.5	130	34.3	11.3	2.17	0.6	16.9	146
JUN
09...	1245	71	8.4	8.5	573	19.3	230	51.5	24.0	4.05	1	40.0	257
JUL
24...	1200	21	8.2	8.6	678	24.8	220	33.9	33.7	5.98	2	57.1	286
AUG
13...	0815	34	6.5	8.5	689	21.5	190	29.3	27.6	6.31	3	89.9	280

WATER-QUALITY DATA, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

Date	Chlor- ide, water, fltrd, mg/L (00940)	Fluor- ide, water, fltrd, mg/L (00950)	Silica, water, fltrd, mg/L (00955)	Sulfate water, fltrd, mg/L (00945)	Residue water, fltrd, sum of consti- tuents mg/L (70301)	Residue water, fltrd, tons/ acre-ft (70303)	Residue water, fltrd, tons/d (70302)
OCT
17...	6.98	0.6	28.6	85.4	--	--	--
DEC
19...	9.73	0.57	26.4	95.4	--	--	--
FEB
19...	6.93	0.51	25.6	98.9	--	--	--
MAR
11...	6.59	0.51	20.8	102	471	0.64	72.4
APR
24...	3.34	0.29	15.4	50.0	302	0.41	90.6
MAY
16...	2.33	0.2	14.8	23.7	193	0.26	215
JUN
09...	5.24	0.4	23.7	54.8	358	0.49	68.4
JUL
24...	8.23	0.6	25.7	69.4	406	0.55	23.0
AUG
13...	7.77	0.6	24.2	82.3	436	0.59	40.0
E -- Estimated laboratory analysis value.

Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius 

WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

DAY	MAX	MIN	MEAN	MAX	MIN	MEAN	MAX	MIN	MEAN	MAX	MIN	MEAN
	OCTOBER			NOVEMBER			DECEMBER			JANUARY
1	771	709	747	---	---	---	---	---	---	740	684	702
2	709	662	689	---	---	---	---	---	---	740	690	726
3	662	577	617	---	---	---	---	---	---	736	720	730
4	---	---	---	---	---	---	---	---	---	738	704	727
5	---	---	---	---	---	---	---	---	---	743	705	717
6	---	---	---	---	---	---	---	---	---	769	711	749
7	---	---	---	---	---	---	---	---	---	750	711	734
8	---	---	---	---	---	---	---	---	---	742	676	714
9	---	---	---	---	---	---	---	---	---	740	681	720
10	---	---	---	---	---	---	---	---	---	691	665	677
11	---	---	---	---	---	---	---	---	---	670	639	658
12	---	---	---	---	---	---	---	---	---	697	645	676
13	---	---	---	---	---	---	---	---	---	700	607	651
14	---	---	---	---	---	---	---	---	---	707	671	689
15	---	---	---	---	---	---	---	---	---	671	633	647
16	---	---	---	---	---	---	---	---	---	686	659	673
17	---	---	---	---	---	---	---	---	---	692	660	675
18	796	762	778	---	---	---	---	---	---	709	657	688
19	792	762	778	---	---	---	---	---	---	744	685	713
20	793	763	777	---	---	---	833	769	801	738	651	703
21	786	759	773	---	---	---	788	747	769	723	641	682
22	782	757	768	---	---	---	789	752	768	746	662	701
23	781	758	769	---	---	---	847	764	811	734	711	723
24	914	750	777	---	---	---	803	753	779	721	703	714
25	772	750	761	---	---	---	755	723	745	724	698	713
26	769	747	758	---	---	---	808	752	786	710	700	705
27	775	742	762	---	---	---	805	771	786	724	695	708
28	774	734	751	---	---	---	803	752	780	713	693	703
29	769	722	748	---	---	---	767	700	740	712	694	703
30	767	744	756	---	---	---	700	681	690	731	698	715
31	772	704	753	---	---	---	721	693	711	732	702	717
MONTH	---	---	---	---	---	---	---	---	---	769	607	702
	FEBRUARY			MARCH			APRIL			MAY
1	721	702	710	766	607	706	669	624	655	366	345	359
2	728	690	714	754	607	716	667	592	620	397	364	386
3	739	686	707	739	712	729	600	591	596	407	379	394
4	757	718	741	739	704	720	629	600	615	628	360	408
5	781	723	754	740	693	711	659	629	644	449	402	411
6	782	665	738	739	707	728	665	630	653	426	410	417
7	842	733	792	767	725	749	660	629	649	457	420	431
8	843	771	806	762	716	734	680	624	650	436	422	431
9	787	687	752	750	708	729	683	619	644	507	416	453
10	743	697	721	736	704	723	683	583	619	464	423	436
11	743	689	719	733	665	713	593	508	548	438	426	432
12	707	686	698	719	670	698	---	---	---	459	435	447
13	712	687	699	692	626	664	---	---	---	441	382	413
14	687	524	596	650	564	590	---	---	---	385	371	379
15	549	523	539	601	568	580	---	---	---	478	328	363
16	644	546	593	612	583	597	---	---	---	382	318	327
17	696	643	677	633	593	621	---	---	---	---	---	---
18	751	680	735	675	621	650	---	---	---	---	---	---
19	758	739	749	698	675	692	488	451	469	---	---	---
20	781	751	768	733	691	712	520	485	505	---	---	---
21	794	743	765	758	703	727	551	504	528	---	---	---
22	768	744	761	755	696	723	535	476	510	276	224	247
23	774	753	764	754	671	710	490	437	464	277	189	228
24	775	750	766	709	587	646	495	441	474	312	266	284
25	778	743	757	665	611	647	543	495	523	325	276	304
26	771	745	760	697	663	681	518	402	465	344	306	322
27	773	735	755	706	664	683	410	339	369	346	264	304
28	761	614	715	708	670	691	362	321	335	358	247	299
29	---	---	---	721	687	707	334	316	325	326	255	293
30	---	---	---	720	699	707	348	327	342	330	272	304
31	---	---	---	707	667	698	---	---	---	389	326	351
MONTH	843	523	723	767	564	690	---	---	---	---	---	---
	JUNE			JULY			AUGUST			SEPTEMBER
1	---	---	---	720	661	687	752	684	707	670	636	652
2	370	280	317	724	674	696	847	699	735	680	649	664
3	---	---	---	727	665	695	732	687	711	683	644	665
4	433	381	405	725	668	696	736	694	710	672	643	656
5	470	420	445	728	665	696	726	685	704	680	643	666
6	504	469	484	720	661	685	734	692	714	691	675	685
7	543	504	525	731	662	694	725	687	707	709	676	695
8	563	543	553	730	660	696	729	691	709	713	635	675
9	588	563	578	728	665	692	724	675	701	2,220	644	1,050
10	604	587	598	711	655	682	734	683	708	865	576	780
11	614	597	606	714	656	686	748	683	717	804	781	790
12	597	567	581	730	664	696	748	688	720	796	756	774
13	601	583	594	722	666	689	831	675	741	797	778	788
14	625	582	605	719	658	688	782	733	754	779	726	758
15	636	625	629	710	661	684	823	414	654	757	712	732
16	644	636	640	704	662	680	897	791	820	765	735	749
17	657	644	652	712	665	682	804	744	779	763	747	753
18	658	638	649	705	666	682	762	734	747	777	742	756
19	650	625	635	693	666	675	747	716	735	787	748	762
20	689	617	630	678	651	664	743	708	724	791	756	774
21	623	601	612	690	649	669	735	708	719	802	769	783
22	621	614	618	686	656	671	722	687	706	797	731	775
23	642	618	630	688	650	669	701	671	686	752	716	733
24	657	629	642	691	671	680	962	659	718	763	743	751
25	666	646	656	688	655	673	696	656	675	758	724	738
26	670	640	655	693	653	674	682	653	666	737	713	726
27	675	639	657	701	655	679	678	656	667	722	700	713
28	676	644	662	699	660	681	689	650	669	711	689	700
29	708	672	690	703	659	682	674	643	657	704	680	692
30	730	674	702	716	670	692	669	634	650	697	670	685
31	---	---	---	718	674	694	671	633	652	---	---	---
MONTH	---	---	---	731	649	684	962	414	708	2,220	576	737

Temperature, water, degrees Celsius 

WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

DAY	MAX	MIN	MEAN	MAX	MIN	MEAN	MAX	MIN	MEAN	MAX	MIN	MEAN
	OCTOBER			NOVEMBER			DECEMBER			JANUARY
1	15.4	9.4	12.6	7.2	3.9	5.7	5.0	1.5	3.0	0.0	0.0	0.0
2	13.8	10.4	11.9	6.7	4.5	5.9	4.4	2.5	3.3	0.0	0.0	0.0
3	11.6	8.7	10.3	5.8	1.6	3.8	3.3	0.9	2.2	0.0	0.0	0.0
4	14.0	8.7	11.0	5.2	1.9	3.5	2.8	0.0	1.3	0.0	0.0	0.0
5	16.4	10.4	12.9	5.7	0.4	3.0	4.1	0.7	2.1	0.0	0.0	0.0
6	15.7	8.6	12.2	5.8	0.4	3.1	2.5	0.0	1.3	0.0	0.0	0.0
7	15.9	8.7	12.3	5.2	0.7	3.1	2.6	0.0	1.1	0.0	0.0	0.0
8	16.0	8.6	12.3	6.8	3.3	4.9	1.8	0.0	0.7	0.0	0.0	0.0
9	15.1	8.4	11.9	6.4	4.3	5.9	0.4	0.0	0.1	0.0	0.0	0.0
10	15.1	7.8	11.5	5.6	2.4	3.9	0.1	0.0	0.0	0.0	0.0	0.0
11	14.9	8.6	11.9	5.7	3.0	4.2	0.4	0.0	0.0	0.0	0.0	0.0
12	13.6	7.1	10.6	4.8	0.5	2.8	2.7	0.0	1.1	2.5	0.0	1.0
13	12.2	4.8	8.7	3.4	1.5	2.6	2.2	0.0	0.9	2.3	0.0	1.0
14	12.3	5.2	8.9	6.2	2.8	4.3	1.0	0.0	0.3	2.2	0.0	0.8
15	12.0	4.8	8.5	5.9	3.5	4.8	2.1	0.0	0.8	3.0	0.4	1.5
16	12.2	4.7	8.5	4.4	0.5	2.6	2.8	0.0	1.0	0.7	0.0	0.1
17	12.3	5.1	8.8	3.9	0.0	2.1	3.7	2.0	2.6	1.6	0.0	0.5
18	12.2	5.2	8.9	4.4	0.8	2.7	2.1	0.4	1.3	0.1	0.0	0.0
19	11.5	4.7	8.3	4.0	0.4	2.3	1.1	0.0	0.1	0.0	0.0	0.0
20	10.7	4.1	7.6	4.5	0.1	2.2	0.0	0.0	0.0	0.8	0.0	0.1
21	10.8	4.1	7.6	5.0	0.9	2.9	0.0	0.0	0.0	1.7	0.0	0.5
22	10.6	6.2	8.3	5.1	0.9	3.0	0.0	0.0	0.0	3.2	0.0	1.2
23	11.9	7.9	9.7	4.8	1.7	3.2	0.0	0.0	0.0	4.7	1.0	2.7
24	11.3	7.6	9.3	5.9	1.9	3.8	0.0	0.0	0.0	3.9	0.9	2.5
25	11.1	6.7	8.9	5.0	2.1	3.5	0.0	0.0	0.0	5.7	2.5	3.9
26	9.3	6.2	7.6	2.1	0.0	0.8	0.0	0.0	0.0	4.6	0.0	2.4
27	11.0	6.0	8.2	0.6	0.0	0.1	0.0	0.0	0.0	4.9	0.1	2.5
28	10.8	7.3	8.9	1.5	0.0	0.3	0.0	0.0	0.0	4.4	1.5	2.9
29	9.6	5.6	7.4	2.3	0.0	0.7	0.0	0.0	0.0	4.8	0.5	2.6
30	8.3	5.1	6.7	3.3	0.0	1.1	0.0	0.0	0.0	4.4	0.9	2.7
31	7.8	5.8	6.8	---	---	---	0.0	0.0	0.0	5.5	1.2	3.3
MONTH	16.4	4.1	9.6	7.2	0.0	3.1	5.0	0.0	0.7	5.7	0.0	1.0
	FEBRUARY			MARCH			APRIL			MAY
1	5.9	1.9	3.9	7.0	0.4	4.1	13.4	6.4	10.1	12.1	6.3	9.4
2	5.6	2.9	4.1	7.3	0.5	3.6	10.2	6.8	8.4	14.3	7.3	10.9
3	4.2	0.3	2.3	7.5	0.4	3.9	8.2	5.4	6.8	14.5	9.1	11.9
4	2.6	0.0	1.0	4.9	2.1	3.5	9.2	2.9	6.1	11.9	7.7	9.1
5	2.0	0.0	0.4	7.4	0.8	3.7	8.1	3.9	6.1	11.6	6.2	8.8
6	0.8	0.0	0.1	8.2	1.9	4.9	11.8	4.5	7.5	14.0	6.5	10.4
7	0.0	0.0	0.0	10.2	3.4	6.7	13.8	4.6	8.3	12.6	8.6	10.9
8	0.0	0.0	0.0	11.0	3.3	7.1	14.0	3.7	8.7	12.6	8.6	10.7
9	0.0	0.0	0.0	9.8	3.0	6.5	15.8	5.2	10.3	11.1	7.7	8.9
10	0.0	0.0	0.0	9.1	3.4	6.2	15.9	6.6	11.3	10.9	5.3	7.8
11	0.6	0.0	0.1	12.3	4.6	8.0	15.6	7.3	11.6	13.9	5.6	10.0
12	2.3	0.0	0.7	13.0	5.7	9.1	12.7	7.3	10.1	16.7	8.0	12.4
13	4.2	0.7	2.4	12.3	4.4	8.6	14.5	5.9	10.2	15.0	10.2	13.0
14	4.4	1.7	2.9	9.8	4.6	7.7	12.3	7.9	10.5	15.8	9.6	13.0
15	4.7	1.8	3.1	9.7	4.7	7.7	11.1	7.8	9.4	14.1	11.4	12.4
16	4.3	1.2	2.9	9.0	6.7	7.8	13.6	5.6	9.5	16.8	9.5	13.0
17	5.9	1.3	3.6	9.2	6.0	7.2	11.2	6.7	8.9	15.6	10.6	12.8
18	6.6	2.8	4.5	6.5	4.2	5.5	11.6	7.3	9.0	13.0	10.9	11.9
19	7.0	0.0	3.9	8.4	3.7	5.9	13.2	6.0	9.0	14.6	8.6	11.6
20	6.7	0.1	3.4	8.6	3.8	6.4	15.5	5.2	10.1	15.0	8.8	12.1
21	7.2	1.7	4.3	11.8	5.1	7.9	12.7	7.8	10.3	15.2	8.2	12.1
22	5.0	1.9	3.5	13.1	4.0	8.3	12.2	8.6	10.4	16.6	8.8	13.0
23	6.6	0.2	3.0	13.7	5.5	9.6	10.9	7.3	8.7	16.8	8.7	12.7
24	5.0	0.5	2.8	10.7	7.5	9.0	16.3	6.7	11.0	17.4	10.4	14.4
25	4.7	2.3	3.6	12.8	4.5	8.5	17.1	8.2	12.8	16.8	10.9	14.2
26	5.4	2.9	4.1	9.3	5.0	7.4	16.3	9.1	12.8	18.4	10.7	14.4
27	6.7	3.0	4.8	8.4	4.8	6.7	14.2	8.0	11.6	19.5	11.6	15.9
28	7.9	1.6	4.4	9.9	2.1	5.6	12.9	8.6	10.9	19.4	11.3	15.8
29	---	---	---	10.3	1.1	5.5	10.9	8.6	9.7	19.9	12.2	16.5
30	---	---	---	12.9	2.4	7.5	11.7	7.4	9.6	19.7	14.3	17.2
31	---	---	---	14.0	4.8	8.4	---	---	---	20.3	13.8	16.9
MONTH	7.9	0.0	2.5	14.0	0.4	6.7	17.1	2.9	9.7	20.3	5.3	12.4
	JUNE			JULY			AUGUST			SEPTEMBER
1	20.1	15.2	17.6	27.3	18.6	22.9	27.8	19.1	23.2	25.5	16.3	20.8
2	18.7	12.9	16.2	27.4	17.4	22.1	27.5	20.3	23.7	23.1	17.0	20.1
3	20.3	11.7	16.6	27.5	17.1	22.1	26.9	21.1	23.5	24.3	16.5	20.2
4	20.7	13.0	17.1	27.9	17.6	22.4	29.2	20.2	24.1	23.4	16.6	19.8
5	21.5	14.2	17.8	28.2	18.0	22.8	29.1	20.2	24.3	21.3	17.1	19.4
6	21.2	13.2	17.3	27.1	18.7	22.8	28.1	19.4	23.6	18.5	15.7	17.2
7	20.6	13.9	17.1	28.2	17.9	22.6	25.5	20.7	22.7	23.3	16.0	19.1
8	21.9	13.0	17.5	27.8	17.8	22.4	28.5	18.9	23.2	20.8	15.0	18.2
9	20.8	14.8	18.1	28.6	17.9	22.8	29.6	20.7	24.5	18.1	12.6	14.8
10	23.3	15.6	19.2	28.8	17.8	23.0	28.9	20.6	24.5	14.1	11.6	13.1
11	24.0	15.4	19.6	28.3	18.1	23.1	29.7	20.8	24.8	17.4	10.1	13.4
12	23.8	15.3	19.3	28.3	18.8	23.3	29.9	20.9	24.8	18.7	10.8	14.7
13	23.3	15.3	19.1	27.8	18.7	23.1	29.7	21.5	25.2	18.5	12.1	15.2
14	25.3	15.6	20.2	29.3	19.3	23.9	29.3	21.6	25.3	17.3	9.3	13.3
15	26.2	16.6	21.3	28.0	20.6	24.2	25.2	13.6	21.2	17.9	9.5	13.7
16	24.2	18.0	21.0	30.1	20.6	24.6	22.9	18.0	20.4	17.6	11.6	14.8
17	24.1	16.1	19.8	31.0	20.6	25.0	25.0	17.9	20.9	16.5	12.3	14.3
18	23.7	16.4	20.1	31.1	22.0	26.0	25.5	18.7	21.8	16.2	8.2	12.0
19	24.2	17.7	20.2	29.8	21.5	25.3	25.7	17.3	21.4	16.5	8.3	11.9
20	20.2	15.3	17.6	30.3	21.4	25.5	26.0	17.6	21.8	17.1	9.7	13.3
21	22.3	13.9	17.9	31.0	22.0	26.0	25.4	18.5	21.9	17.1	9.4	13.3
22	23.4	16.1	19.7	30.3	21.4	25.5	26.6	19.7	22.7	17.6	9.4	13.5
23	22.2	15.9	19.2	27.6	21.4	23.9	27.8	20.1	23.5	18.0	9.7	13.8
24	19.0	14.9	17.0	28.9	20.2	24.4	26.8	19.3	22.8	18.2	10.0	14.1
25	23.5	13.3	18.0	28.3	22.3	25.3	27.3	19.9	23.4	17.4	9.4	13.6
26	24.7	15.0	19.7	30.3	21.4	25.4	28.0	18.9	23.0	17.9	9.6	13.8
27	25.4	15.9	20.6	31.0	21.9	25.9	23.7	19.3	21.4	18.6	10.5	14.6
28	26.1	16.6	21.3	30.5	21.8	25.5	26.8	18.0	21.9	18.6	11.1	15.0
29	26.5	17.2	21.7	28.9	21.9	25.1	26.6	17.7	21.9	18.4	11.0	14.8
30	27.9	17.5	22.5	29.6	20.3	24.6	25.4	18.3	21.4	18.3	11.0	14.8
31	---	---	---	27.4	20.6	23.4	25.2	16.4	20.6	---	---	---
MONTH	27.9	11.7	19.0	31.1	17.1	24.0	29.9	13.6	22.9	25.5	8.2	15.4
YEAR	31.1	0.0	10.6