07022000 DATA: Sediment Tables, 2001

Station list Available data
LOWER MISSISSIPPI RIVER BASIN

07022000 MISSISSIPPI RIVER AT THEBES, IL

(National Stream-Quality Accounting Network Station)

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.--
SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: October 1932 to current year. Monthly discharge only for some periods, published in WSP 1311. Prior to April 1941, published as "at Cape Girardeau, Mo".

STAGE: March 1933 to February 1938 and October 1939 to current year in reports of the U.S. Geological Survey. Prior to April 1941, published as "at Cape Girardeau, Mo". Since November 1878, under name of "at Grays Point" in files of the U.S. Army Corps of Engineers; January 1879 to May of 1896, published as "at Grays Point"; since May 1896, published as "at Cape Girardeau" in reports of the Mississippi River Commission February 1891 to February 1894; and since 1904, published as "at Cape Girardeau" in reports of the National Weather Service.

SURFACE-WATER QUALITY

CHEMICAL: January 1973 to current year.

SEDIMENT: October 1980 to current year.

SPECIFIC CONDUCTANCE: October 1974 to September 1981.

WATER TEMPERATURE: October 1974 to September 1981.

REVISED RECORDS.-- WSP 1341: 1844(M). WDR MO-76-1: Drainage area, WDR MO-98-1: Extreme outside period of record.

GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter and telemark. Datum of gage is 300.00 ft above sea level. Mar. 17, 1933, to Dec. 21 1934, nonrecording gage; Dec. 22, 1934, to Apr. 4, 1941, water-stage recorder, at site 8.2 mi upstream at datum 4.65 ft higher; Apr. 5, 1941, to Sept. 30, 1941, nonrecording gage at present site and datum; Oct. 1, 1941, to Oct. 11, 1943, at datum 0.07 ft higher. Prior to Apr. 5, 1941, various auxiliary gages used. Since Oct. 1, 1943, former gage at Cape Girardeau used as auxiliary gage.

REMARKS.-- Natural flow of stream affected by many reservoirs and navigation dams in the upper Mississippi River Basin and by many reservoirs and diversions for irrigation in the Missouri River Basin. 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.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 996,000 ft³/s, August 7, 1993; maximum gage height, 45.91 ft, May 23, 1995; minimum discharge, 23,400 ft³/s, December 13, 1937.
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 OUTSIDE PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Flood of July 4, 1844, reached an elevation of 345.14 ft, present datum, at Grays Point, from floodmarks, discharge, 1,075,000 ft³/s, computed by the U.S. Army Corps of Engineers.

EXTREMES FOR CURRENT YEAR.--
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily mean, 1,380 mg/L, March 20; minimum daily mean, 82 mg/L, Jan. 13.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 2,100,000 tons, June 10; minimum daily, 16,400 tons, Jan. 5.

SEDIMENT DISCHARGE, SUSPENDED (TONS/DAY), WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001
		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	109000	144	42600	98400	121	32200	112000	109	33000
2	107000	155	44700	99200	120	32000	110000	119	35200
3	105000	135	38000	93200	117	29400	110000	131	38900
4	100000	137	36900	87700	129	30500	110000	118	35100
5	94400	143	36400	85900	131	30400	109000	95	27900

6	98900	152	40600	89200	132	31800	110000	96	28500
7	114000	153	47200	93900	111	28300	107000	101	28900
8	117000	161	51000	106000	126	35900	99700	115	30900
9	115000	154	47700	115000	137	42300	90900	92	22600
10	112000	151	45500	116000	124	39000	84000	90	20400

11	104000	143	40200	123000	143	47600	80300	97	21100
12	95800	144	37200	131000	168	59500	80000	102	22000
13	92700	151	37800	142000	140	53800	81600	---	e21600
14	93200	152	38400	150000	151	61300	80100	---	e20300
15	93600	136	34400	153000	157	64900	73900	---	e18200

16	93500	121	30500	143000	150	58000	72200	---	e17400
17	98800	133	35400	136000	159	58500	73000	---	e17200
18	108000	124	35900	136000	153	56000	75100	---	e17300
19	112000	119	36000	132000	114	40700	80600	---	e19500
20	110000	117	34700	132000	112	40000	84500	---	e23200

21	104000	140	38900	134000	125	45100	85100	---	e23700
22	e95200	130	33500	132000	130	46200	83500	---	e22700
23	e87600	131	31300	126000	169	57400	81900	---	e21600
24	86500	123	28800	123000	126	41700	85800	---	e23600
25	91000	122	30100	119000	131	42000	89600	---	e26700

26	97200	117	30800	114000	130	40200	88300	---	e25800
27	96500	107	27800	114000	149	45900	83500	---	e22600
28	93300	104	26300	117000	141	44500	80100	---	e20800
29	91900	118	29400	115000	135	41700	78300	---	e19500
30	93000	121	30400	114000	137	42000	76600	---	e18300

31	95200	111	28700	---	---	---	77600	---	e18200


	JANUARY			FEBRUARY			MARCH

1	77100	---	e17700	175000	232	113000	505000	1310	1790000
2	76200	---	e17200	216000	475	278000	506000	1260	1720000
3	77000	---	e17100	215000	537	311000	481000	1090	1410000
4	77400	---	e16800	197000	447	238000	432000	912	1070000
5	76700	---	e16400	187000	386	195000	377000	829	845000

6	77700	84	17500	173000	355	166000	331000	636	569000
7	79600	97	20900	162000	340	149000	307000	553	458000
8	79600	104	22300	154000	258	107000	294000	465	369000
9	80200	97	21000	144000	198	77100	280000	394	298000
10	80400	98	21300	147000	210	83200	264000	323	230000

11	79700	97	20900	197000	305	167000	249000	269	181000
12	79000	96	20400	278000	607	462000	234000	238	151000
13	78600	82	17500	327000	959	848000	225000	213	129000
14	77400	95	19900	327000	1160	1020000	216000	184	107000
15	81100	117	25600	308000	858	715000	206000	177	98800

16	89000	109	26100	291000	633	497000	216000	187	109000
17	96400	121	31700	275000	496	368000	255000	220	153000
18	103000	141	39000	262000	434	307000	321000	355	311000
19	102000	142	38900	248000	395	265000	386000	714	753000
20	103000	146	40500	236000	300	191000	420000	1380	1570000

21	105000	128	36200	226000	273	166000	425000	1330	1520000
22	105000	123	34700	218000	239	140000	414000	1080	1210000
23	107000	147	42400	207000	218	122000	395000	843	900000
24	108000	120	35100	197000	222	118000	375000	682	692000
25	107000	113	32600	225000	294	179000	359000	578	561000

26	104000	104	29200	340000	477	450000	351000	515	488000
27	98100	99	26100	430000	924	1080000	348000	496	466000
28	93700	103	26200	478000	1170	1510000	346000	478	447000
29	90200	91	22100	---	---	---	337000	508	462000
30	89400	92	22100	---	---	---	322000	472	412000

31	110000	126	38200	---	---	---	302000	396	323000


	APRIL			MAY			JUNE

1	284000	358	275000	414000	289	323000	346000	302	282000
2	269000	323	235000	418000	276	312000	342000	273	252000
3	262000	309	219000	421000	312	355000	345000	277	261000
4	269000	297	215000	423000	276	315000	368000	342	342000
5	270000	251	183000	422000	269	307000	399000	541	585000

6	288000	264	205000	419000	235	266000	435000	---	e813000
7	312000	340	287000	417000	240	270000	471000	---	e1060000
8	319000	375	323000	418000	259	292000	509000	---	e1420000
9	309000	401	335000	426000	268	308000	546000	---	e1810000
10	301000	346	281000	439000	321	382000	578000	---	e2100000

11	301000	319	259000	456000	534	659000	599000	---	e1840000
12	309000	358	299000	467000	820	1030000	612000	---	e1410000
13	335000	533	484000	464000	846	1060000	613000	612	1010000
14	361000	704	687000	460000	705	876000	590000	511	814000
15	372000	752	756000	461000	556	692000	562000	466	708000

16	376000	718	730000	471000	507	644000	524000	446	631000
17	383000	685	709000	475000	531	681000	486000	398	522000
18	392000	672	711000	482000	498	647000	453000	376	460000
19	396000	652	697000	501000	507	681000	443000	410	490000
20	396000	654	700000	507000	498	680000	446000	600	723000

21	396000	592	633000	516000	471	657000	447000	788	951000
22	395000	513	547000	528000	441	630000	433000	909	1060000
23	395000	463	494000	536000	446	645000	415000	810	909000
24	398000	427	460000	530000	417	597000	420000	801	910000
25	402000	361	391000	516000	331	461000	438000	1090	1290000

26	408000	399	440000	497000	304	407000	449000	1250	1510000
27	412000	426	474000	471000	292	372000	448000	1100	1340000
28	415000	417	468000	442000	275	328000	439000	889	1060000
29	416000	369	413000	409000	270	299000	423000	750	858000
30	414000	337	377000	378000	322	331000	400000	574	621000

31	---	---	---	358000	337	326000	---	---	---


	JULY			AUGUST			SEPTEMBER

1	381000	478	492000	193000	255	133000	139000	161	60300
2	365000	407	401000	189000	221	113000	138000	141	52900
3	351000	349	330000	199000	192	103000	132000	135	48100
4	346000	311	290000	201000	203	110000	119000	145	46600
5	337000	278	253000	187000	226	114000	109000	142	41900

6	329000	259	230000	176000	231	110000	108000	130	38000
7	329000	218	193000	172000	224	104000	108000	128	37200
8	331000	220	197000	169000	194	88400	105000	128	36200
9	329000	232	206000	167000	162	73100	104000	128	36100
10	314000	252	213000	164000	145	64200	109000	151	44600

11	296000	285	228000	163000	141	62000	110000	191	56800
12	279000	271	204000	161000	134	58200	106000	139	39700
13	e264000	212	150000	152000	132	54300	107000	122	35000
14	e250000	178	120000	142000	128	49400	113000	120	36600
15	e236000	168	107000	133000	122	44000	118000	111	35500

16	e227000	153	94100	119000	128	41100	118000	109	34600
17	223000	156	93200	103000	126	35100	119000	111	35500
18	212000	235	134000	98900	139	37200	118000	117	37200
19	221000	525	315000	99300	149	40000	112000	137	41400
20	221000	533	319000	104000	137	38400	106000	162	46200

21	204000	382	211000	105000	122	34400	104000	167	46700
22	194000	254	133000	104000	110	30900	111000	135	40200
23	189000	203	104000	103000	108	30000	148000	152	61200
24	183000	166	82200	104000	105	29600	172000	229	107000
25	184000	156	77600	117000	112	35300	169000	327	150000

26	191000	220	113000	143000	130	50100	158000	323	137000
27	187000	246	124000	141000	153	58300	147000	317	126000
28	182000	203	99600	129000	131	45600	138000	285	106000
29	190000	235	120000	122000	115	37900	135000	232	84400
30	205000	245	136000	121000	107	35000	138000	192	71200

31	204000	243	134000	130000	121	42700	---	---	---

e Estimated