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Water-Year Summary for Site USGS 07374000

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Available Parameters
00010 Temperature, water(Max.,Min.,Mean)  
00060 Discharge(Mean)  
00065 Gage height(Max.,Min.,Mean)  
00095 Specific cond at 25C(Max.,Min.,Mean)  
00300 Dissolved oxygen(Mean)  
00400 pH(Max.,Min.,Med.)  
00480 Salinity(Max.,Min.,Mean)  
63680 Turbidity, Form Neph(Mean,Max.,Min.)  
99133 NO3+NO2,water,insitu(Mean)  

Water year 2019: 2018-10-01 to 2019-09-30
 
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USGS Water-Year Summary 2019
07374000 Mississippi River at Baton Rouge, LA
LOCATION - Lat 30°26'44.4", long 91°11'29.6" referenced to North American Datum of 1983, in sec.45, T.7 S., R.1 W., West Baton Rouge Parish, LA, Hydrologic Unit 08070100, located on a city Pier, approximately 1.5 mi upstream of the Port Allen Locks, between the I-10 and Hwy. 190 bridges over the river.
DRAINAGE AREA - 1125810 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - March 2004 to current year. Miscellaneous measurements made at site prior to 1976.
GAGE - Water-stage recorder and water-quality monitor. Datum of gage is NAVD 88.  Records in the USGS database prior to 2004 were taken from US Army Corps of Engineers publications and adjusted to MSL based on datum information available in those publications.
 
REMARKS - Records are good. Discharge affected by tide at very low stages. Satellite telemetry at station.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 1,436,000 ft³/s, May 18-19, 2011; maximum gage height, 45.48 ft, May 18-19, 2011; minimum recorded discharge, 132,800 ft³/s, Oct. 31, 2012; minimum recorded gage height, 3.43 ft, Oct. 31, 2012.
Water-Data Report 2019
07374000 Mississippi River at Baton Rouge, LA -- Continued
DISCHARGE, CUBIC FEET PER SECOND
YEAR 2018-10-01 to 2019-09-30
DAILY MEAN VALUES
Day Oct
 2018
1652,000
2652,000
3651,000
4649,000
5650,000
6652,000
7654,000
8658,000
9662,000
10667,000
11668,000
12667,000
13665,000
14660,000
15653,000
16646,000
17638,000
18637,000
19643,000
20654,000
21671,000
22693,000
23713,000
24732,000
25750,000
26759,000
27765,000
28766,000
29763,000
30753,000
31735,000
Total21,180,000
Mean683,200
Max766000
Min637000
Ac-ft42,010,000
Day Nov
2018
1721,000
2696,000
3678,000
4674,000
5673,000
6677,000
7687,000
8703,000
9718,000
10737,000
11754,000
12773,000
13796,000
14817,000
15830,000
16838,000
17846,000
18853,000
19856,000
20856,000
21852,000
22844,000
23835,000
24828,000
25818,000
26802,000
27784,000
28768,000
29754,000
30743,000
 -- 
Total23,210,000
Mean773,700
Max856000
Min673000
Ac-ft46,040,000
Day Dec
2018
1731,000
2717,000
3701,000
4688,000
5680,000
6671,000
7665,000
8668,000
9680,000
10693,000
11717,000
12744,000
13773,000
14798,000
15813,000
16828,000
17838,000
18851,000
19853,000
20849,000
21838,000
22830,000
23824,000
24822,000
25820,000
26818,000
27824,000
28841,000
29844,000
30848,000
31853,000
Total24,120,000
Mean778,100
Max853000
Min665000
Ac-ft47,840,000
Day Jan
2019
1860,000
2870,000
3892,000
4923,000
5944,000
6959,000
7971,000
8983,000
91,000,000
101,020,000
111,020,000
121,040,000
131,070,000
141,090,000
151,100,000
161,110,000
171,120,000
181,120,000
191,130,000
201,130,000
211,130,000
221,130,000
231,120,000
241,110,000
251,090,000
261,080,000
271,070,000
281,060,000
291,060,000
301,050,000
311,050,000
Total32,300,000
Mean1,042,000
Max1130000
Min860000
Ac-ft64,070,000
Day Feb
2019
11,040,000
21,040,000
31,040,000
41,040,000
51,040,000
61,030,000
71,020,000
81,010,000
91,000,000
10989,000
11980,000
12977,000
13972,000
14967,000
15965,000
16971,000
17981,000
181,000,000
191,020,000
201,040,000
211,050,000
221,070,000
231,090,000
241,110,000
251,130,000
261,160,000
271,190,000
281,210,000
 -- 
 -- 
 -- 
Total29,130,000
Mean1,040,000
Max1210000
Min965000
Ac-ft57,780,000
Day Mar
2019
11,230,000
21,260,000
31,280,000
41,290,000
51,310,000
61,320,000
71,330,000
81,340,000
91,350,000
101,360,000
111,360,000
121,360,000
131,360,000
141,360,000
151,360,000
161,370,000
171,370,000
181,370,000
191,370,000
201,360,000
211,350,000
221,340,000
231,330,000
241,310,000
251,300,000
261,290,000
271,280,000
281,270,000
291,260,000
301,250,000
311,250,000
Total40,940,000
Mean1,321,000
Max1370000
Min1230000
Ac-ft81,200,000
Day Apr
2019
11,230,000
21,220,000
31,200,000
41,190,000
51,170,000
61,160,000
71,140,000
81,130,000
91,110,000
101,110,000
111,100,000
121,100,000
131,090,000
141,090,000
151,080,000
161,080,000
171,080,000
181,080,000
191,100,000
201,110,000
211,110,000
221,110,000
231,120,000
241,120,000
251,130,000
261,140,000
271,140,000
281,140,000
291,140,000
301,140,000
 -- 
Total33,860,000
Mean1,129,000
Max1230000
Min1080000
Ac-ft67,160,000
Day May
2019
11,140,000
21,140,000
31,140,000
41,150,000
51,150,000
61,150,000
71,160,000
81,160,000
91,180,000
101,210,000
111,220,000
121,240,000
131,240,000
141,230,000
151,230,000
161,230,000
171,240,000
181,240,000
191,250,000
201,260,000
211,260,000
221,260,000
231,260,000
241,260,000
251,260,000
261,260,000
271,260,000
281,250,000
291,250,000
301,240,000
311,240,000
Total37,760,000
Mean1,218,000
Max1260000
Min1140000
Ac-ft74,900,000
Day Jun
2019
11,240,000
21,230,000
31,230,000
41,230,000
51,230,000
61,240,000
71,240,000
81,240,000
91,240,000
101,250,000
111,250,000
121,250,000
131,260,000
141,260,000
151,250,000
161,250,000
171,250,000
181,250,000
191,240,000
201,230,000
211,220,000
221,210,000
231,200,000
241,200,000
251,190,000
261,180,000
271,180,000
281,180,000
291,170,000
301,170,000
 -- 
Total36,760,000
Mean1,225,000
Max1260000
Min1170000
Ac-ft72,910,000
Day Jul
2019
11,170,000
21,180,000
31,180,000
41,180,000
51,180,000
61,180,000
71,180,000
81,180,000
91,190,000
101,190,000
111,190,000
121,190,000
131,200,000
141,190,000
151,180,000
161,190,000
171,180,000
181,170,000
191,150,000
201,140,000
211,120,000
221,110,000
231,090,000
241,080,000
251,070,000
261,050,000
271,030,000
281,010,000
29987,000
30969,000
31950,000
Total35,060,000
Mean1,131,000
Max1200000
Min950000
Ac-ft69,530,000
Day Aug
2019
1929,000
2910,000
3894,000
4875,000
5857,000
6838,000
7814,000
8786,000
9757,000
10728,000
11703,000
12680,000
13661,000
14644,000
15626,000
16607,000
17586,000
18562,000
19540,000
20521,000
21504,000
22494,000
23483,000
24473,000
25466,000
26460,000
27454,000
28452,000
29460,000
30467,000
31468,000
Total19,700,000
Mean635,500
Max929000
Min452000
Ac-ft39,070,000
Day Sep
2019
1469,000
2472,000
3474,000
4476,000
5473,000
6468,000
7465,000
8463,000
9458,000
10450,000
11441,000
12431,000
13424,000
14415,000
15404,000
16394,000
17383,000
18373,000
19361,000
20362,000
21362,000
22362,000
23361,000
24362,000
25365,000
26369,000
27373,000
28375,000
29379,000
30387,000
 -- 
Total12,350,000
Mean411,700
Max476000
Min361000
Ac-ft24,500,000
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 2004 - 2019, BY WATER YEAR (WY)
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
Mean 326,500 369,300 469,600 621,600 628,300 731,100 770,400 806,000 697,100 568,000 397,100 321,400
Max 683,200 873,100 815,900 1,187,000 1,040,000 1,321,000 1,248,000 1,293,999 1,225,000 1,131,000 698,200 448,800
(WY) (2019) (2010) (2005) (2016) (2019) (2019) (2008) (2011) (2019) (2019) (2015) (2008)
Min 172,700 183,300 227,000 309,500 312,200 446,100 434,700 425,000 244,100 177,300 152,500 162,100
(WY) (2013) (2013) (2013) (2011) (2011) (2006) (2006) (2012) (2012) (2012) (2012) (2012)
Water-Data Report 2019
07374000 Mississippi River at Baton Rouge, LA -- Continued
SUMMARY STATISTICS
Water Year 2019 Water Years 2004 - 2019
Annual total 346,400,000                   
Annual mean 949,000          577,000         
Highest annual mean           949,000          2019
Lowest annual mean           418,300          2012
Highest daily mean 1,370,000          Mar 16 1,430,000          May 18, 2011
Lowest daily mean 361,000          Sep 19 141,000          Oct 31, 2012
Annual 7-day minimum 362,100          Sep 19 146,900          Jul 31, 2012
Maximum peak flow 1,380,000a         Mar 19 1,440,000a         May 18, 2011
Maximum peak stage 44.40       Mar 19 45.48       May 18, 2011
Annual runoff (cfsm) 0.843      0.497     
Annual runoff (inches) 11.4        6.75      
10 percent exceeds 1,260,000          977,000         
50 percent exceeds 1,030,000          507,000         
90 percent exceeds 473,600          233,000         
a Discharge affected by Regulation or Diversion
USGS Water-data graph for site USGS 07374000