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Survival, Evasion and Recovery (FM 21-76-1)
VII. Water
Chapter VII
Water
1. Water Requirements
Drink extra water. Minimum 2 quarts per day to maintain fluid
level. Exertion, heat, injury, or an illness increases water loss.
Note: Pale yellow urine indicates adequate hydration.
2. Water Procurement
a. DO NOT drink—
(1) Urine.
(2) Fish juices.
(3) Blood.
(4) Sea water.
(5) Alcohol.
(6) Melted water from new sea ice.
b. Water sources:
(1) Surface water (streams, lakes, and springs).
(2) Precipitation (rain, snow, dew, sleet) (FigureVII-1).
(3) Subsurface (wells and cisterns).
(4) Ground water (when no surface water is available)
(Figure VII-2).
(a) Abundance of lush green vegetation.
(b) Drainages and low-lying areas.
(c) "V" intersecting game trails often point to water.
(d) Presence of swarming insects indicates water is near.
(e) Bird flight in the early morning or late afternoon
might indicate the direction to water.
(5) Snow or ice.
(a) DO NOT eat ice or snow.
•Lowers body temperature.
•Induces dehydration.
•Causes minor cold injury to lips and mouth.
Vll-l
Figure VII-2. Water Indicators
VII-2
(b) Melt with fire.
•Stir frequently to prevent damaging container.
•Speed the process by adding hot rocks or water.
(c) Melt with body heat.
•Use waterproof container.
•Place between layers of clothing.
•DO NOT place next to the skin.
(d) Use a water generator (Figure VII-3).
Figure VII-3. Water Generator
(6) Open seas.
(a) Water available in survival kits.
(b) Precipitation.
•Drink as much as
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