SURFACE WATER SUPFLY of the UNITED STATEP
SURFACE WATER SUPFLY of the UNITED STATEP
SURFACE WATER SUPFLY of the UNITED STATEP
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ROANOKE RIVER BASIN<br />
Rpanoke River near Toshes, Va.<br />
Location* 1- WftterHst&ge recorder, lat. 37°02'O3", long, re"31'18% If miles<br />
rrWWflte^nS Oreek, 3 miles upstream from Plgg River, and 5 miles northwest rf Toshes,<br />
PittsylVB&la Coiiaty. Datum, <strong>of</strong> gage Is 1588,99 feet above mean sea level (1WTO3.S by<br />
Corps <strong>of</strong> tngiaeers, y. S. Army).<br />
Drainage area.- 1,0130 square miles.<br />
Records available.- September 1925 to September 1945.<br />
Average discharge.- 30 years, 977 second-feet.<br />
Extremes,- .Maximum discharge during year, 30,800 second-feet Sept. 18 (gage heiglt, "21.04 ><br />
'< reeV)} minimum, 210seoond-feet Sept. 2 (gage height, 1.22 feet).<br />
1925-45; 'Maximum'discharge, 7O,000 second-feet Aug. 15, 1940 (gage height, 27.36<br />
feet, from floodaark), from rating curve extended-above 31,000 second-feet by logarithmic<br />
plotting on basis <strong>of</strong> unit hydrograph and flood-routing studies by Corr* <strong>of</strong><br />
Engineers, U. S. Army, and records for o<strong>the</strong>r stations In Roanoke River Basin; minimum,<br />
93 second-feet Sept. 19, 20, 1932 (gage height, 0.96 foot).<br />
Revisions.- Ofte figures <strong>of</strong> maximum discharge for some water years have beer revised,<br />
as shown ih <strong>the</strong> following table. They supersede those published in water-supply papers<br />
'indicated.<br />
Water-supply<br />
Paper<br />
742, 892.......<br />
852, 892.......<br />
8?E, 892.......<br />
1002. .......<br />
Water<br />
year<br />
Date<br />
Gage height<br />
(feet)<br />
Discharge<br />
(second-feet)<br />
1932-33<br />
1937-38<br />
1938-39<br />
1943-44<br />
Oct. 1'8<br />
Oct. 19<br />
Aug. 19<br />
Sept. 19<br />
19.60<br />
20.45<br />
19.95<br />
18.88<br />
27,700<br />
29,500<br />
26,200<br />
Remarks.- Records fair.<br />
Reylslono.- Revised figures <strong>of</strong> discharge, In second-feet, for <strong>the</strong> high-water, period in <strong>the</strong><br />
'water 'year 1940, superseding those published in Water-Supply Paper 892, are' given herewltn:<br />
Aug. 14. ,...22,060<br />
15.....55,500<br />
Aug. 16.....34,600<br />
IV.....19,000<br />
Ronfch v<br />
Secondfoot<br />
-days Maximum Minimum Mean<br />
Per square Ron<strong>of</strong> f lninches<br />
131,869 55,500 480 5.S67 S.76<br />
6.65<br />
537.115 55.500 304 1.468<br />
1.36<br />
1.4*<br />
18.49<br />
19.59<br />
Peak discharge (revised).-' Oct. 19, 1937 (f p.m.) 29,600 sec.-ft.j Aug. 19, 1939 (9 a.m.) 28,600<br />
see.-ft.^ Hay 31, 1940 (6j30 a.m.) 26,000 sec.-ft.; Sept. 19, 1944 (4!3o a.m.) 26,200 sec.-ft.<br />
Dag<br />
1<br />
2<br />
3<br />
4 S<br />
6<br />
7<br />
8 9<br />
10<br />
U 12<br />
13<br />
14<br />
15<br />
16<br />
IT<br />
IB<br />
19<br />
20<br />
?i<br />
UK<br />
83<br />
84<br />
28<br />
?§ it<br />
m<br />
as<br />
50<br />
31<br />
Sating teble, water year 1944-45, except period <strong>of</strong> Ice effect<br />
(gage height. In feet, and discharge, in second-feet)<br />
.<br />
1.1<br />
1.3<br />
1.4<br />
143<br />
287<br />
372<br />
1.6<br />
1.8<br />
2.0<br />
374<br />
"600<br />
6«6<br />
2.5<br />
3.0<br />
4.0<br />
1,020<br />
1,420<br />
2,260<br />
6.0<br />
S.O<br />
11.0<br />
4,360<br />
6,980<br />
11,400<br />
14.0<br />
18.0<br />
16,400<br />
24,200<br />
Discharge, in second-feet, water year October 1944 to September 194o<br />
Oct. Nor. Dec. Jan. Feb. Mar. Apr- Hay June July tag-<br />
2,040<br />
' 1,460<br />
1,060<br />
825<br />
750<br />
636<br />
59fi<br />
538<br />
480<br />
441<br />
422<br />
410<br />
514<br />
735<br />
578<br />
467<br />
441<br />
416<br />
404<br />
4,660<br />
18,600<br />
3,880<br />
*2,000<br />
al,500<br />
1,800<br />
al,000<br />
aeoo<br />
aSOO<br />
a7SO<br />
a700<br />
a6EO<br />
a5BQ<br />
a560<br />
aS40<br />
.660<br />
a500<br />
aSOO<br />
a470<br />
e490<br />
a 430<br />
a580<br />
a470<br />
a 450<br />
a45O<br />
a 440<br />
a 480<br />
a 460<br />
447<br />
' 422<br />
416<br />
. 460<br />
563<br />
493<br />
487<br />
460<br />
460<br />
428<br />
467<br />
840<br />
818<br />
98S<br />
-<br />
908<br />
788<br />
64S<br />
615<br />
578<br />
57S<br />
549<br />
788<br />
1,100<br />
988<br />
982<br />
1,300<br />
1,020<br />
840<br />
780<br />
840<br />
768<br />
742<br />
758<br />
728<br />
780<br />
735<br />
765<br />
750<br />
765<br />
1,180<br />
1,340<br />
1,180<br />
1,060<br />
945<br />
908<br />
1,980<br />
3,350<br />
3,010<br />
32.100<br />
dl,700<br />
dl,500<br />
1,420<br />
1,460<br />
*1,540<br />
1,42'0<br />
1,280<br />
1,140<br />
1,140<br />
1,860<br />
1,300<br />
1,980<br />
1,740<br />
1,460<br />
1,300<br />
1,220<br />
1,140<br />
1,100<br />
1,060<br />
1,020<br />
945<br />
908<br />
670<br />
340<br />
80S<br />
~ 772<br />
712<br />
b580<br />
bSOO<br />
b540<br />
b600<br />
690<br />
69S<br />
645<br />
4622<br />
630<br />
600<br />
592<br />
585<br />
1,180<br />
1,990<br />
1,460<br />
1,140<br />
1,380<br />
3,540<br />
2,440<br />
1,860<br />
1,740<br />
2,080<br />
3,110<br />
2,810<br />
2,080<br />
1,740<br />
1,580<br />
1,480<br />
_ -<br />
1,340<br />
1,140<br />
1,060<br />
1,100-<br />
1,340<br />
3,320<br />
2,530<br />
1,860<br />
1,6SO<br />
1,460<br />
1,300<br />
1,180<br />
1,100<br />
*982<br />
945<br />
908<br />
S70<br />
862<br />
840<br />
818<br />
908<br />
848<br />
802<br />
735<br />
735<br />
1,O60<br />
1,260<br />
1,100<br />
982,<br />
982<br />
908<br />
870<br />
908<br />
S40<br />
763<br />
750<br />
728<br />
660<br />
660<br />
a700<br />
a650<br />
a 620<br />
a600<br />
a560<br />
aSBO<br />
a600<br />
1,090<br />
1,660<br />
988<br />
778<br />
750<br />
690<br />
660<br />
758<br />
, 1,340<br />
1,500<br />
1,18O<br />
982<br />
870<br />
862<br />
788<br />
698<br />
788<br />
728<br />
69S<br />
645<br />
615<br />
585<br />
578<br />
556<br />
6631<br />
549<br />
549<br />
514<br />
637<br />
758<br />
728<br />
1,900<br />
1,170<br />
S48<br />
689<br />
631<br />
568<br />
541<br />
495<br />
588<br />
1,030<br />
930<br />
711<br />
711<br />
652<br />
588<br />
548<br />
476<br />
470<br />
451<br />
428<br />
428<br />
, 445<br />
457<br />
489<br />
489<br />
521<br />
502<br />
483<br />
439<br />
482<br />
382v<br />
366.<br />
398<br />
71S<br />
528<br />
482<br />
376<br />
343<br />
333<br />
348<br />
343<br />
328<br />
323<br />
318<br />
398<br />
'302<br />
338<br />
302<br />
292<br />
32S<br />
308<br />
S73<br />
868<br />
264<br />
318<br />
254<br />
254<br />
259<br />
948<br />
1,090<br />
489<br />
495<br />
575<br />
451<br />
483<br />
457<br />
433<br />
404<br />
488<br />
404<br />
428<br />
433<br />
554<br />
57S<br />
470<br />
451<br />
521<br />
38"?<br />
684<br />
47-J<br />
4ST<br />
69«<br />
56«<br />
422<br />
36"?<br />
345<br />
307<br />
297<br />
307<br />
29?<br />
28?<br />
' 29?-<br />
897<br />
3e«<br />
2f-?<br />
869<br />
aeo<br />
2E4<br />
2C9<br />
264<br />
878<br />
2f<br />
8J«<br />
2J"<br />
2S7<br />
S3*<br />
Swt.<br />
" i"-'"'ig"""iir" 1<br />
214<br />
887<br />
836<br />
833<br />
232<br />
264<br />
- 387<br />
404<br />
376<br />
333 '<br />
302<br />
283<br />
264<br />
713<br />
1,1TO<br />
'. 906<br />
4,840<br />
23,300<br />
9,960<br />
SjSOO<br />
8,100<br />
1,610<br />
1,390<br />
1,090<br />
954<br />
779<br />
al,COO<br />
842.<br />
696<br />
982<br />
-<br />
Peak dfeohftgaa.- Oct. 81 (9 a.m.) 16,100 aee.-ft.} Sept. 18 (S p.m.) 30,800 aec.-ft.<br />
* vaster aischamge meaaurement «ade- on this dsiy'.<br />
a Ho gage-height record; discharge computed on basis <strong>of</strong> weekly readings by obaerver and SUB <strong>of</strong><br />
records for Roanoke River at Hiagara and Blaekwater River near Union Ball.<br />
b Stage-dlacharge relation affected by ice.<br />
d Doubtful gage-height record; discharge computed on basis <strong>of</strong> SUB <strong>of</strong> records for Roanoio Bitrer at ><br />
Klagora and Blaekwater River near Union Hall. -<br />
-.?»-fft<br />
-^
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