ICE REPORT
Section A
DATE: __________________mm/dd/yy TIME: _____________AM/PM RIVER NAME: __________________________________
OBSERVER'S NAME: _________________________________________
LOCATION OF OBSERVATION (See attached map grid):
Lat: ______ ______' ______"
Long: ______ ______' ______"
Area/Site #: __________________________ or
Location of nearest roads: ______________________________________________________________________________________
Location of nearest bridge: _____________________________________________________________________________________
Name of town: _________________________________________________________
County: _________________________
Is this a changed condition?
Yes
No
Photographs:
Yes
No
LOCAL WEATHER
Air: __________F
Water: __________F
Temperature:
Rain: __________in.
Snow: __________in.
Wind:
Average speed: ______mph
Direction: (circle one) NW N NE
W ⇑ E
SW S SE
RIVER CONDITION
Bankfull __________ft
Estimate less than bankfull __________ft
Nearest gage reading __________ft
Section B
FREEZEUP
Border ice: Growth from shore __________ft
__________% of channel remaining open
Moving ice: Types
Frazil slush
Frazil pans
(Check all that apply)
Fragmented sheet ice
Large sheets
Other: __________________________
Percentage of open channel surface occupied by moving ice: ____________________%
Ice cover complete ______________________________________ (mm/dd/yy)
CHARACTER OF INTACT ICE COVER
Location of downstream end of ice cover: Lat: _____ _____' _____" Long: _____ _____' _____" or River Mi: ______
Location of upstream end of ice cover: Lat: _____ _____' _____" Long: _____ _____' _____" or River Mi: ______
Surface roughness (check one):
Smooth
< 0.5 ft
< 1.0 ft
< 1.5 ft
> 1.5 ft
Yes
No
Snow covered
Evidence of decay:
If yes, check:
Melting snow
Melting ice
Candled ice
Yes
No
Cracks in ice cover:
If yes, check:
Parallel to shore Distance from shore: __________ft
Estimate
Measured
Perpendicular to shore
Yes
No
Evidence of fracturing along banks
If yes, check:
(a) Ice thickness when fracture occurred: __________ft
Estimate
Measured
(b) Displacement: __________ft
Estimate
Measured
(c) Distance from shore: __________ft
Estimate
Measured
BREAKUP
Cracks (check one):
Parallel to shore Distance from shore: __________ft
Estimate
Measured
Perpendicular to shore
Average distance between cracks: __________ft
Water on top of ice:
Pooled
Flowing
None
Time ice started to more:
_________AM/PM _____________________________mm/dd/yy
Time water was clear of ice: _________AM/PM _____________________________mm/dd/yy
Post movement: Height of shear walls along bank: _______________ft
ICE JAMS
Cause (check one):
Freezeup
Breakup
Condition at ice jam initiation point (check all that apply):
Solid ice sheet
Bend
Bridge
Island
Constriction
Reduction in water slope
Other: _________________________
Jam length: ______________mi (approx)
Location of ice jam toe (downstream end), if known: Lat: _____ _____' _____"Long: _____ _____' _____" or River Mi: _____
Location of ice jam heat (upstream end), if known: Lat: _____ _____' _____" Long: _____ _____' _____" or River Mi: _____
Height of shear walls along bank after jam release: ________ft
Figure 17. Nebraska ice report data collection form.
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