11370000 SHASTA LAKE NEAR REDDING, CA.  


LOCATION - Lat 40°43'08", long 122°25'12", in SE 1/4 NW 1/4 sec.15, T.33 N., R.5 W., Shasta County, 
Hydrologic Unit 18020005, in Shasta Dam on Sacramento River, near right bank, 2 mi downstream from 
Squaw Creek, and 9.5 mi north of Redding.

DRAINAGE AREA - 6,421 mi", excluding Goose Lake Basin.

PERIOD OF RECORD - November 1942 to current year. Prior to 1950, published as Shasta Reservoir near Redding. 
CHEMICAL DATA: Water years 1978.80.

GAGE - Water-stage recorder. Datum of gage is sea level (levels by U.S. Bureau of Reclamation). Prior 
to July 10, 1944, nonrecording gage at various sites near dam at same datum. Contents based on capacity 
table dated May 8, 1967, provided by U.S. Bureau of Reclamation.

REMARKS - Lake is formed by concrete gravity-type dam completed in 1949; regulation began Dec. 30, 1943. 
Usable capacity, 4,436,400 acre-ft, between elevations 737.75 ft, invert of lowest set of river 
outlets, and 1,067.0 ft, top of flashboard gates on drum-type spillway gates. Operating pool from elevation, 
840.0 ft, capacity, 587,127 acre-ft to 1,067.0 ft, capacity, 4,552,090 acre-ft. Dead storage, 
115,800 acre-ft. Installation of flashboard gates on top of drum gates completed Nov. 12, 1964. All 
water passes down the Sacramento River, most of which is through powerplant at dam. Figures given 
represent total contents at 2400 hours. Lake is used for flood control, power generation, irrigation, 
and recreation. See schematic diagram of Pit and McCloud River Basins.

COOPERATION - Records were provided by U.S. Bureau of Reclamation, not rounded to U.S. Geological Survey 
standards. EXTREMES (AT 2400 HOURS)

FOR PERIOD OF RECORD - Maximum contents, 4,550,300 acre-ft, May 19, 1967, elevation, 1,066.94 ft; minimum 
since first filling, 562,600 acre-ft, Sept. 13, 1977, elevation, 836.68 ft. EXTREMES (AT 2400 HOURS)

FOR CURRENT YEAR - Maximum contents, 4,025,297 acre-ft, Apr. 23, elevation, 1,048.63 ft; minimum, 2,199,643 
acre-ft, Sept. 30, elevation, 968.56 ft. Capacity table (elevation, in feet, and contents, in 
acre-feet) (Based on table provided by U.S. Bureau of Reclamation, dated May 8, 1967) 830 515,543 890 
1,051,713 950 1,876,996 1,010 3,051,750 840 587,127 900 1,167,888 960 2,046,829 1,020 3,286,929 850 
665,511 910 1,291,854 970 2,226,093 1,030 3,533,478 860 751,027 920 1,424,780 980 2,416,019 1,050 
4,063,108 870 843,589 930 1,566,238 990 2,616,622 1,067 4,552,090 880 943,929 940 1,717,255 1,000 2,828,544

              RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001

                                               DAILY OBSERVATION AT 2400 HOURS

DAY      OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

1    2980848  2943147  2886781  2908440  3041694  3511542  3961521  4018145  3772193  3261665  2702760  2381425
2    2977473  2937114  2886120  2906890  3046493  3530704  3967788  4013470  3758193  3245145  2688663  2372155
3    2975448  2933774  2885019  2906890  3045122  3542600  3972420  4011269  3738695  3231773  2676276  2362908
4    2971849  2931993  2883477  2907997  3044436  3575370  3977324  4010169  3727155  3216765  2662061  2354836
5    2969599  2933107  2884358  2909325  3049922  3624022  3979777  4006327  3716927  3202064  2643328  2348324

6    2966899  2931993  2884138  2908882  3054736  3655239  3987164  4001399  3702815  3183383  2631303  2340854
7    2964649  2931548  2885680  2905340  3059561  3681441  3990723  3997567  3686376  3161956  2618276  2335890
8    2961049  2930658  2881715  2909325  3064845  3708297  3993460  3994555  3672870  3140398  2605518  2329224
9    2959259  2929767  2877751  2912868  3076109  3732925  3995377  3992092  3652137  3121030  2593809  2317807
10   2961949  2927986  2873566  2925092  3086270  3748705  3995650  3990723  3630452  3103620  2581334  2312883

11   2962849  2924202  2874226  2937114  3099210  3761092  3996472  3984974  3614505  3086732  2569131  2309475
12   2964199  2921530  2874887  2944490  3112209  3767689  3997019  3975690  3597591  3068980  2553335  2305877
13   2966449  2917968  2880173  2948070  3123597  3776961  4000852  3968060  3578935  3051064  2541546  2302280
14   2960378  2916855  2887882  2949861  3135031  3783319  4000852  3962339  3561619  3030723  2531421  2298317
15   2955902  2917300  2895598  2952546  3140398  3789676  4001947  3953892  3546401  3008663  2522772  2291915

16   2955007  2918414  2896705  2955455  3146711  3794178  4004684  3945213  3526922  2990784  2512327  2286455
17   2952546  2916410  2896927  2957916  3154451  3800531  4006327  3938705  3506006  2972973  2503326  2279502
18   2948070  2912868  2897812  2959930  3168056  3805296  4012920  3930570  3487689  2954783  2490746  2273324
19   2946280  2910211  2899805  2965099  3187864  3813237  4016495  3919216  3471191  2937559  2478015  2265835
20   2943147  2909547  2902683  2965099  3232726  3824913  4021446  3905454  3454981  2920862  2470086  2257630

21   2940462  2907775  2902019  2963749  3300665  3834224  4022271  3896025  3437594  2899141  2463163  2249626
22   2939567  2906226  2906668  2964424  3349371  3848068  4020896  3889311  3418789  2875988  2457229  2241639
23   2936891  2901133  2907111  2969149  3381371  3865441  4025297  3881253  3397096  2858441  2451907  2234236
24   2933552  2897370  2905340  2977473  3408902  3874539  4021996  3872123  3376477  2844016  2445415  2228499
25   2931993  2894491  2904012  2989880  3436352  3886088  4020346  3864639  3359595  2824636  2434797  2223333

26   2930658  2890526  2905119  3001187  3459957  3902216  4021171  3850474  3344745  2808352  2422669  2217445
27   2930212  2887001  2907997  3008208  3480926  3913550  4020621  3833958  3333071  2789556  2414266  2212476
28   2934442  2885239  2910432  3013209  3495969  3924883  4019796  3819858  3320232  2767838  2407252  2208060
29   2935555  2886341  2913310  3021166      ---  3935180  4020346  3808472  3304762  2745813  2402771  2203302
30   2940686  2885680  2913089  3030266      ---  3945755  4020071  3808472  3283078  2730708  2395761  2199643

31   2941357      ---  2910875  3035294      ---  3955799      ---  3782524      ---  2716074  2389562      ---
a    1005.12  1002.61  1003.75  1009.28  1028.51  1046.09  1048.44  1039.62  1019.84   994.76   978.64   968.56
b     -43774   -55677   +25195  +124419  +460675  +459830   +64272  -237547  -499446  -567004  -326512  -189919
MAX  2980848  2943147  2913310  3035294  3495969  3955799  4025297  4018145  3772193  3261665  2702760  2381425
MIN  2930212  2885239  2873566  2905340  3041694  3511542  3961521  3782524  3283078  2716074  2389562  2199643