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Water-Year Summary for Site USGS 09429600

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Available Parameters
00060 Discharge(Mean)  

Water year 2020: 2019-10-01 to 2020-09-30
 

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USGS Water-Year Summary 2020
09429600 COLORADO RIVER BELOW LAGUNA DAM, AZ-CA
LOCATION - Lat 32°48'44", long 114°30'51" referenced to North American Datum of 1927, in SE 1/4 NE 1/4 sec.35, T.15 S., R.24 E., Imperial County, CA, Hydrologic Unit 15030107, San Bernardino meridian, on right bank 1.4 mi downstream from Laguna Dam, 2.8 mi northeast of Bard, CA, and 10 mi northeast of Yuma, AZ.
DRAINAGE AREA - 188,600 mi² of which 4,000 mi² probably is noncontributing, the Great Divide basin in southern Wyoming is noncontributing.
SURFACE-WATER RECORDS
PERIOD OF RECORD - December 1971 to current year.
GAGE - Water-stage recorder. Datum of gage is 120.83 ft (revised, 2010) above sea level (Bureau of Reclamation Benchmark).
REMARKS - Record is rated fair. Natural flow of the Colorado River at this point is affected by transmountain diversions, storage reservoirs, power developments, ground-water withdrawals, diversions for irrigation, municipal, and industrial uses, and return flows from irrigated areas. Flow past station consists mainly of water released through Imperial Dam, sludge from the desilting basins at Imperial Dam, seepage through Imperial Dam, and seepage from the All-American Canal and the Gila Gravity Main Canal.
EXTREMES FOR PERIOD OF RECORD - Maximum daily discharge of 30,900 ft³/s on August 19, 1983; minimum daily discharge of 71 ft³/s on May 29, 1973.
Water-Data Report 2020
09429600 COLORADO RIVER BELOW LAGUNA DAM, AZ-CA -- Continued
DISCHARGE, CUBIC FEET PER SECOND
YEAR 2019-10-01 to 2020-09-30
DAILY MEAN VALUES
[e, Value has been estimated.]
Day Oct
 2019
1507
2366
3355
4349
5343
6340
7336
8363
9616
10347
11314
12299
13292
14288
15284
16279
17282
18278
19274
20270
21274
22279
23278
24270
25267
26267
27266
28261
29338
30365
31341
Total9,988
Mean322
Max616
Min261
Ac-ft19,810
Day Nov
2019
1322
2306
3294
4280
5273
6270
7265
8264
9263
10263
11260
12254
13261
14264
15285
16318
17350
18380
19362
20574
211,850
221,750
231,260
24575
25384
26363
27356
28351
29949
30409
 -- 
Total14,360
Mean479
Max1850
Min254
Ac-ft28,470
Day Dec
2019
1378
2365
3360
4357
5356
6519
7563
8492
9468
10428
11394
12411
13429
14419
15411
16400
17385
18356
19337
20368
21393
22382
23375
24375
25373
26375
27378
28381
29381
30374
31377
Total12,360
Mean399
Max563
Min337
Ac-ft24,520
Day Jan
2020
1372
2371
3399
4450
5513
6531
7478
8385
9376
10367
11358
12357
13358
14412
15479
16455
17441
18435
19450
20436
21397
22362
23380
24645
25785
26736
27778
28683
29661
30646
31642
Total15,140
Mean488
Max785
Min357
Ac-ft30,030
Day Feb
2020
1638
2642
3642
4643
5628
6615
7592
8609
9618
10490
11376
12412
13587
14459
15439
16431
17425
18439
19462
20439
21435
22430
23424
24418
25408
26403
27450
28496
29499
 -- 
 -- 
Total14,549
Mean502
Max643
Min376
Ac-ft28,860
Day Mar
2020
1499
2450
3391
4406
5416
6433
7443
8465
9477
10641
111,490
121,620
131,740
14775
151,330
161,600
171,410
181,360
191,230
201,200
211,230
221,310
231,440
241,460
251,510
261,420
27965
28925
291,330
301,530
311,680
Total33,180
Mean1,070
Max1740
Min391
Ac-ft65,800
Day Apr
2020
11,860
22,470
32,470
42,040
51,940
61,860
72,280
82,230
91,760
101,600
111,610
121,610
131,620
141,600
151,620
161,600
171,590
181,610
191,600
201,610
211,550
221,460
231,370
241,600
251,630
261,310
271,180
281,120
291,090
301,760
 -- 
Total50,649
Mean1,688
Max2470
Min1090
Ac-ft100,500
Day May
2020
11,280
21,190
3793
4654
5617
6602
7607
8605
9585
10569
11560
12560
13554
14563
15570
16563
17642
18675
19642
20609
21582
22566
23554
24540
25530
26519
27513
28529
29544
30536
31527
Total19,380
Mean625
Max1280
Min513
Ac-ft38,440
Day Jun
2020
1523
2510
3496
4496
5496
6497
7497
8489
9496
10477
11476
12485
13472
14463
15454
16448
17458
18462
19461
20471
21475
22e408
23e490
24e526
25e535
26e534
27e498
28e472
29e490
30e465
 -- 
Total14,520
Mean484
Max535
Min408
Ac-ft28,799
Day Jul
2020
1e455
2466
3474
4475
5481
6476
7482
8483
9479
10481
11485
12484
13484
14480
15480
16490
17477
18468
19462
20450
21454
22468
23469
24467
25464
26464
27465
28457
29453
30451
31455
Total14,580
Mean470
Max490
Min450
Ac-ft28,920
Day Aug
2020
1460
2463
3480
4489
5482
6483
7477
8473
9471
10472
11479
12510
13849
14699
15648
16714
17635
18571
19665
20688
21655
22620
23593
24639
25965
26713
27654
28629
29592
30556
31526
Total18,350
Mean592
Max965
Min460
Ac-ft36,400
Day Sep
2020
1502
2488
3478
4473
5472
6473
7477
8474
9469
10471
11475
12490
13496
14495
15522
16570
17587
18570
19559
20555
21552
22516
23489
24470
25423
26379
27449
28520
29915
30746
 -- 
Total15,550
Mean519
Max915
Min379
Ac-ft30,850
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1972 - 2020, BY WATER YEAR (WY)
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
Mean 1,369 1,252 1,385 1,612 1,424 1,305 1,161 1,197 1,388 1,701 1,764 1,595
Max 22,660 15,570 15,680 15,420 15,570 13,750 12,609 12,400 15,150 24,380 26,350 22,440
(WY) (1984) (1984) (1985) (1984) (1984) (1984) (1984) (1986) (1984) (1983) (1983) (1983)
Min 245 274 261 234 190 302 345 285 316 306 318 256
(WY) (2017) (1994) (1974) (1976) (1979) (2012) (1978) (1973) (1973) (2009) (1996) (1996)
Water-Data Report 2020
09429600 COLORADO RIVER BELOW LAGUNA DAM, AZ-CA -- Continued
SUMMARY STATISTICS
Water Year 2020 Water Years 1972 - 2020
Annual total 232,600                   
Annual mean 635.5        1,448         
Highest annual mean           14,940          1984
Lowest annual mean           352.2        1996
Highest daily mean 2,470          Apr 02 30,900          Aug 19, 1983
Lowest daily mean 254.0        Nov 12 71.0        May 29, 1973
Annual 7-day minimum 261.3        Nov 08 141.0        Feb 01, 1979
Maximum peak flow           30,900a,b         Aug 19, 1983
Maximum peak stage           12.88       Aug 18, 1977
Annual runoff (cfsm) 0.003      0.008     
Annual runoff (inches) 0.046      0.103     
10 percent exceeds 1,426          2,220         
50 percent exceeds 480.0        448.0       
90 percent exceeds 337.7        298.0       
a Discharge is a Maximum Daily Average
b Discharge affected by Regulation or Diversion
USGS Water-data graph for site USGS 09429600