07022000 DATA: Sediment Tables, 1999

Station list Available data
LOWER MISSISSIPPI RIVER BASIN

07022000 MISSISSIPPI RIVER AT THEBES, IL

LOCATION.--Lat 37°13'00", long 89°27'50", in NW 1/4 sec.17, T.15 S., R.3 W., Alexander County, Hydrologic Unit 07140105, near center span on downstream side of railroad bridge at Thebes, 5.0 mi downstream from Headwater Diversion Channel, and at mile 43.7 above Ohio River.

DRAINAGE AREA.--713,200 mi², approximately.

PERIOD OF RECORD.--January 1973 to current year.

PERIOD OF DAILY RECORD.--
SPECIFIC CONDUCTANCE: October 1974 to September 1981.
WATER TEMPERATURE: October 1974 to September 1981.
SUSPENDED-SEDIMENT: October 1980 to current year.

REMARKS.--NASQAN station January 1973 to September 1986. Illinois Environmental Protection Agency station October 1986 to September 1994 (during the period, samples were analyzed by the Illinois EPA). Re-established as a NASQAN station October 1994 to current year. Sediment records good except for estimated daily load Jan. 2-17, which are fair.

EXTREMES FOR PERIOD OF DAILY RECORD.--
SPECIFIC CONDUCTANCE: Maximum daily, 705 microsiemens per centimeter, Aug. 5-7, 1980; minimum daily, 272 microsiemens per centimeter, Apr. 6, 1979.
WATER TEMPERATURE: Maximum daily, 31.5 °C, July 10 and 11, 1975, and July 17, 1977; minimum daily, 0.0 °C, on several days during winter periods.
SUSPENDED-SEDIMENT CONCENTRATONS: Maximum daily mean, 3,890 mg/L, Dec. 22, 1985; minimum daily mean, 13 mg/L, Jan. 28, 1981.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 6,280,000 tons, Mar. 1, 1985; minimum daily, 2,530 tons, Jan. 28, 1981.

EXTREMES FOR CURRENT YEAR.--
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily mean, 1,490 mg/L, April 20; minimum daily mean, 112 mg/L, Sept. 5.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 1,940,000 tons, Apr. 21; minimum daily, 39,600 tons, Sept. 23.

SEDIMENT DISCHARGE, SUSPENDED (TONS/DAY), WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999
		MEAN			MEAN			MEAN
	MEAN	CONCEN-	SEDIMENT	MEAN	CONCEN-	SEDIMENT	MEAN	CONCEN-	SEDIMENT
	DISCHARGE	TRATION	DISCHARGE	DISCHARGE	TRATION	DISCHARGE	DISCHARGE	TRATION	DISCHARGE
DAY	(CFS)	(mg/L)	(TONS/DAY)	(CFS)	(mg/L)	(TONS/DAY)	(CFS)	(mg/L)	(TONS/DAY)

	OCTOBER			NOVEMBER			DECEMBER

1	151000	167	67600	211000	191	108000	210000	220	125000
2	149000	168	67600	208000	174	97900	202000	215	117000
3	152000	160	65500	212000	174	99800	194000	185	97100
4	160000	149	64500	253000	248	173000	209000	196	111000
5	171000	148	68400	328000	468	420000	222000	192	115000

6	175000	142	67200	378000	738	757000	218000	206	121000
7	214000	215	131000	395000	1100	1170000	210000	248	141000
8	348000	589	570000	385000	1140	1190000	205000	209	116000
9	404000	1300	1420000	361000	1020	990000	227000	191	118000
10	413000	1430	1590000	333000	828	744000	262000	242	172000

11	399000	1170	1260000	320000	718	621000	274000	342	253000
12	372000	1000	1010000	338000	644	588000	253000	462	315000
13	334000	836	754000	359000	698	677000	237000	444	284000
14	292000	685	539000	366000	667	659000	225000	312	190000
15	257000	529	367000	360000	661	643000	213000	249	144000

16	231000	419	262000	342000	655	604000	204000	207	114000
17	217000	334	196000	319000	688	591000	193000	191	99200
18	212000	285	163000	299000	652	526000	188000	200	102000
19	219000	274	163000	286000	524	404000	184000	172	85500
20	266000	309	225000	279000	419	316000	181000	170	83200

21	326000	510	452000	270000	383	280000	181000	196	95700
22	356000	750	722000	259000	331	231000	182000	196	96200
23	358000	940	908000	247000	292	195000	175000	192	91100
24	334000	838	756000	243000	250	164000	168000	189	85200
25	303000	686	561000	235000	225	143000	166000	184	82400

26	275000	600	445000	230000	218	136000	158000	205	86700
27	251000	495	335000	230000	224	139000	140000	274	104000
28	229000	371	230000	224000	228	138000	129000	235	81900
29	220000	281	167000	221000	200	119000	131000	206	72800
30	213000	218	125000	216000	183	107000	128000	187	64900

31	211000	210	120000	---	---	---	124000	191	63900


	JANUARY			FEBRUARY			MARCH

1	115000	191	59400	331000	327	294000	214000	138	79600
2	115000	---	62700	363000	382	375000	208000	138	77400
3	119000	---	74800	386000	513	535000	202000	134	73400
4	113000	---	66400	379000	508	519000	206000	143	79600
5	111000	---	60200	353000	481	458000	212000	137	78400

6	112000	---	58900	337000	408	372000	220000	162	96500
7	114000	---	59400	354000	389	374000	226000	203	124000
8	121000	---	68700	409000	505	559000	227000	188	115000
9	120000	---	68100	444000	560	671000	228000	212	131000
10	112000	---	59000	456000	533	656000	250000	242	164000

11	108000	---	53300	438000	446	528000	294000	262	210000
12	109000	---	56000	410000	424	468000	323000	396	346000
13	112000	---	60700	379000	397	407000	319000	483	416000
14	119000	---	68000	358000	344	332000	303000	399	326000
15	121000	---	70800	348000	318	299000	291000	322	252000

16	121000	---	67100	337000	266	242000	275000	261	193000
17	129000	---	85800	319000	234	201000	267000	220	159000
18	146000	344	136000	300000	227	183000	259000	204	143000
19	163000	384	169000	290000	248	194000	253000	174	119000
20	170000	332	152000	285000	261	201000	255000	173	119000

21	176000	296	141000	283000	255	194000	264000	178	127000
22	206000	993	553000	271000	249	182000	258000	138	96000
23	216000	645	376000	254000	236	162000	241000	141	91800
24	272000	493	366000	240000	200	129000	232000	173	108000
25	326000	611	539000	236000	165	105000	237000	196	125000

26	336000	538	487000	227000	136	83600	243000	183	120000
27	323000	632	552000	217000	131	76500	238000	181	116000
28	311000	564	474000	213000	134	77000	227000	174	107000
29	295000	502	400000	---	---	---	220000	162	96600
30	288000	446	347000	---	---	---	212000	137	78300

31	299000	328	265000	---	---	---	198000	139	73900


	APRIL			MAY			JUNE

1	188000	169	86000	535000	750	1080000	483000	579	755000
2	183000	170	83800	546000	879	1300000	483000	530	690000
3	183000	149	74000	557000	948	1430000	480000	455	590000
4	228000	257	159000	562000	909	1380000	473000	390	498000
5	238000	344	221000	558000	620	933000	473000	377	482000

6	229000	207	128000	549000	567	839000	475000	418	536000
7	226000	179	109000	552000	564	840000	475000	486	623000
8	230000	185	114000	568000	589	904000	473000	504	644000
9	235000	182	116000	588000	629	999000	465000	522	656000
10	250000	206	140000	595000	653	1050000	455000	467	574000

11	289000	231	181000	588000	524	832000	440000	471	559000
12	307000	357	296000	561000	471	714000	428000	495	572000
13	299000	490	394000	525000	432	612000	417000	449	506000
14	293000	602	476000	491000	417	552000	414000	463	517000
15	307000	655	543000	449000	421	509000	408000	587	647000

16	314000	598	507000	433000	456	533000	404000	610	664000
17	331000	580	519000	432000	436	508000	406000	567	622000
18	384000	696	728000	438000	570	673000	409000	603	666000
19	434000	1080	1270000	443000	584	698000	407000	575	631000
20	469000	1490	1890000	449000	618	749000	403000	596	649000

21	488000	1470	1940000	462000	618	772000	394000	670	713000
22	497000	1320	1770000	477000	666	858000	384000	619	641000
23	502000	1090	1480000	488000	756	997000	378000	570	582000
24	495000	897	1200000	491000	753	998000	388000	470	493000
25	481000	798	1040000	488000	873	1150000	386000	401	417000

26	473000	696	889000	489000	903	1190000	369000	365	364000
27	482000	700	913000	494000	956	1280000	361000	346	336000
28	496000	789	1060000	500000	1110	1500000	358000	417	403000
29	512000	860	1190000	499000	1110	1500000	345000	438	408000
30	527000	811	1150000	498000	838	1130000	334000	455	410000

31	---	---	---	493000	647	860000	---	---	---


	JULY			AUGUST			SEPTEMBER

1	334000	448	404000	256000	267	184000	159000	132	56700
2	359000	554	540000	260000	285	200000	155000	124	51900
3	394000	850	908000	264000	286	204000	150000	115	46400
4	420000	1140	1290000	262000	289	204000	147000	118	46600
5	418000	1150	1300000	256000	273	188000	145000	112	43800

6	405000	1010	1110000	246000	246	164000	142000	116	44400
7	383000	924	955000	236000	219	140000	141000	125	47700
8	360000	781	758000	230000	201	125000	137000	116	42800
9	341000	779	716000	230000	216	134000	130000	137	48000
10	324000	768	672000	228000	223	138000	131000	131	46400

11	316000	638	544000	222000	213	128000	131000	122	43000
12	314000	616	522000	214000	202	116000	125000	117	39600
13	309000	643	536000	215000	199	115000	123000	130	43300
14	300000	574	466000	225000	269	163000	120000	138	44500
15	293000	512	405000	218000	310	183000	119000	135	43400

16	287000	509	394000	203000	350	192000	120000	128	41500
17	275000	451	334000	192000	442	228000	121000	132	43000
18	266000	389	280000	183000	386	190000	122000	144	47300
19	259000	378	264000	179000	320	154000	123000	146	48700
20	257000	415	288000	172000	269	125000	122000	137	45400

21	251000	345	234000	165000	221	98200	124000	127	42400
22	246000	305	202000	155000	185	77300	120000	129	41900
23	243000	273	179000	153000	165	68100	120000	122	39600
24	239000	237	153000	152000	151	62000	119000	129	41300
25	233000	219	138000	155000	152	63300	117000	136	43000

26	230000	197	122000	159000	160	68400	116000	150	46800
27	233000	190	120000	161000	154	67000	114000	152	46900
28	238000	199	128000	163000	141	62200	112000	152	46200
29	242000	209	137000	163000	129	56800	113000	147	44800
30	248000	242	163000	165000	127	56800	119000	133	40900