IMAGERY ANALYSIS SERVICE NOTES

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78T04759A009900010021-6
• Release Decision: RIPPUB
• Original Classification: T
• Document Page Count: 7
• Document Creation Date: December 28, 2016
• Document Release Date: January 25, 2002
• Sequence Number: 21
• Publication Date: July 30, 1971
• Content Type: NOTES

Approved For Release 2002/05/07 : CIA-RDP78TO4759AO09900010021-6
Top Secret
DIRECTORATE OF
INTELLIGENCE
Imagery Analysis Service Notes
30 July 1971
Declass Review by NIMA/DOD
CIA internal use only
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TCS 16807/71
copy 82
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 Approved For Release 2002/05/07 : CIA-RDP78TO4759AO09900010021-6
The IMAGERY ANALYSIS SERVICE NOTES is a periodic publication
of the DDI Imagery Analysis Service, the departmental PI organization of
CIA.
This publication highlights significant or timely intelligence items derived
from photography.
The interpretations in this publication represent preliminary views which
are subject to modification in the light of further information and more
complete analysis.
WARNING
This document contains information affecting the national security of the
United States within the meaning of the espionage laws U. S. Code Title 18,
Sections 793, 794. The law prohibits its transmission or the reve-
lation of its contents in any manner to an unauthorized person, as well as
its use in any manner prejudicial to the safety or interest of the United
States or for the benefit of any foreign government to the detriment of the
United States. It is to be seen only by personnel especially indoctrinated
and authorized to receive information in the designated control channels.
Its security must be maintained in accordance with regulations pertaining
to TALENT-KEYHOLE Control System.
GROUP 1
EXCLUDED FROM AUTOMATIC
DOWNORADINO AND
DECLASSIFICATION
Printed by the
NATIONAL PHOTOGRAPHIC INTERPRETATION CENTER
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Talent-KEYHOLE TCS 16807/71
Control System Only 30 J u l y 197 I
CENTRAL INTELLIGENCE AGENCY
Directorate of Intelligence
Imagery Analysis Service
IMAGERY ANALYSIS SERVICE NOTES NO. 19/71
Page
Extensive Flooding Near Vinh and in
Red River Delta . . . . . . . . . . . . . . . . . . . . . . 3
Military Vehicles Being Modified at
Zaporozhye Plant . . . . . . . . . . . . . . . . . . . . . . 4
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Ha Giang
4/2
Nghia Lo. Yen B
Tuyen
Quang
t'eng
Vieng
Hoa
6 Bnh
Galion
Nakhon`?;
Phut
~Yeil
Thai
Nguyen
FIGURE 1. EXTENSIVE FLOODING OBSERVED IN NORTH VIETNAM ON PHOTOGRAPHY OF
Dien Bien
Phu
Xieng
It ouag
RAILROAD
ROAD
TRAIL
- 2-
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NORTH VIETNAM
Extensive Flooding Near Vinh and in Red River Delta
GIANT SCALE photography of shows that recent typhoons and
monsoon rains have caused extensive ooding near Vinh and throughout
the Red River Delta. In the Vinh area, the Song Ca and Song La Giang
have flooded large areas, affecting logistics movement and rail construc-
tion. More than 170 cargo trucks were backed up along Route IA near the
ferry slip on the north bank of the Song Ca. The Song Ca rail ferry slips
under construction near Yen Thai were flooded and the railbed was cut on the
south bank.
In the Red River Delta the main rail lines and highways were service-
able, but damage was heavy to the secondary roads and to the Kep/Hon Gai
meter gauge rail line. The rail bridges over the Song Nhat Duc and the
Song Mio were destroyed and numerous villages in the delta were isolated.
The flood waters have undoubtedly damaged the extensive dike and irrigation
system and will probably delay the planting of the second rice crop. (See
Figure I.)
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