Central Texas Highland Lakes - LCRA Maps

Inks
Lake
30º 44.00'
-98º 24.00'
Inks Dam
-98º 23.00'
30º 44.00'
21
800
820
20
Cr
ers
t
e
P
ee
k
HOOVERS VALLEY
30º 43.00'
30º 43.00'
-98º 25.00'
820
Lake LBJ
lo
ra
do
Ri
ve
r
19
Co
820
30º 42.00'
Lake LBJ Contours*
30º 42.00'
8
00
18
790' - 770'
*Normal pool elevation 825 feet above
mean seal level (msl).
Lake Hazards
Shallow Areas (sandbars, may include
rocks and stumps)
Hazards Elevations
Named Feature
Public Boat Ramp
-98º 24.00'
-98º 25.00'
-98º 26.00'
-98º 27.00'
-98º 28.00'
-98º 29.00'
2342
River Mileage Upstream From Dam
0
1,000
0
30º 41.00'
30º 41.00'
WIND WARNING
i am s
C r e ek
W
Superimposed on this map is a grid representing minutes
of latitude and longitude. Map users with a global
positioning system (GPS) receiver can use this grid to
determine their position. Lines of longitude are labeled
with negative numbers to indicate their position west of
the Prime Meridian of 0º that runs through Greenwich,
England.
2545
Central Texas
Highland Lakes
15
14
82
Lake
Buchanan
0
To locate a position on the map using a GPS receiver, first
read the degrees and minutes displayed on the receiver.
Then find the corresponsing meridian (line of longitude)
and parallel (line of latitude) on the map. In the example
shown below, our GPS unit is reading:
183
Burnet
29
Inks
Lake
2342
281
Lake
Marble
Falls
n
10
20 Miles
ee
us
tin
Sta t
0
Cr
To
A
Ho
ne
1431
y C
ree
k
Colo
13
rado
Riv
Approximate 30º 56.50' line
Please note: The LCRA uses a conic projection as its mapping standard.
Because of this, the GPS grid on this map appears to be rotated slightly
counterclockwise. This occurs because the location is east of the
projection’s central meridian. Note how much closer the meridians
are to each other than the parallels are. This is a relatively accurate
reflection of actual distance between these lines. The coordinates
shown are based on the GRS 80 spheroid (NAD83 Datum).
er
2342
COLOR INFRARED IMAGERY
Mill
KINGSLAND
The aerial photographs in the backgrounds of these
maps are color infrared (CIR). They provide a
unique view of the Earth not available in true color
photography. Atmospheric haze is reduced to allow
for a clear view of the terrain. Moreover, objects
on the ground are easily identified by their unique
coloration. On these maps, as in all standard CIR
photographs, vegetation is shown in various shades
of red. For instance, healthy trees are dark red and
grass is light red. Other easily identifiable land cover
types include pavement in shades of gray, and bare
earth as white or light tan.
ek
Cre
12
800
HAZARD BUOYS
CAUTION!
Controlled area.
Type indicated on buoy
(no fishing, no anchoring,
ski area, slow/no wake).
These aerial photographs of the land surrounding Lake LBJ
were taken in January 1995. Because these photographs were
taken on different days during the month with different levels
of sunlight, slight variations in illumination are apparent,
especially in the areas where the photographs border one another.
820
Kingsland Lions
Club Park
(915) 388-6211
For ease of use, if your GPS unit displays coordinates in
degrees, minutes, and seconds, e.g., 30º 55' 45", the seconds
will need to be converted to decimal minutes.
In this example, a decimal minute value of 0.75 indicates
a position three fourths the distance, or 75 percent, from
the 30º 55' line to the 30º56' line.
Map location
using GPS reading
30º 56.00'
GPS CONVERSION
45 ÷ 60 = 0.75
ion
30º 40.00'
k
To San
Antonio
This places us north of the 30º 56' parallel, and west of the
98º 28' meridian. The numbers to the right of the decimal
point on our GPS unit represent decimal minutes. For
latitude, a decimal minute reading of 0.5 tells us we are
halfway between the 30º 56' parallel and the 30º 57'. (See
dashed line approximating position.) In the case of
longitude, the decimal minute value of 0.25 indicates we
are approximately one-fourth of the distance between the
98º 28' meridian and the 98º 29'. (See dashed line.)
To convert seconds to decimal minutes, divide the number
of seconds by 60. This will result in a decimal figure. In the
above example, 45 seconds was divided by 60 to arrive at
0.75 minutes.
-98º 28.00'
30º 57.00'
71
-98º 29.00'
Lake
Travis
30º 40.00'
Approximate 98º 28.25' line
usti
Marble
Falls
N30º 56.50'
W98º 28.25'
To A
Lake
LBJ
Texas Parks and Wildlife
Boater Education Classes . . . . . . . . . . . . . . . 1-800-792-1112
USING THE GPS GRID
16
800
LCRA Boater Education Classes . . . . . . . .1-800-776-5272,
Ext. 3286
children under age 13 to wear a life jacket
when the boat is under way.
Wind warning strobe lights are placed at major
public boat launch ramps throughout the Highland
Lakes and are activated by 18-mile-per-hour winds.
Flashing strobe lights are visible from a mile away
during daylight and from up to 10 miles away at
night. When strobe lights are flashing, boaters and
lake residents should pay particular attention to
lake weather conditions and seek shelter if necessary.
ill
30º 41.00'
Novice boaters are strongly encouraged to take a Boater
Education Course!
n The Texas Water Safety Act requires
-98º 23.00'
-98º 25.00'
-98º 24.00'
30º 41.00'
Operating a boat safely on the Highland Lakes requires
proper preparation, good boat-handling skills and local
knowledge of lake conditions. The LCRA recommends
that boat operators unfamiliar with the Highland Lakes
take a trip or two with a skipper who is experienced at
boating on the lake they plan to navigate.
Guard (USCG) approved Type I, II, III
or V wearable life jacket for each person
on the boat. Boats 16 feet and longer also
must have one Type IV throwable
flotation device.
500 meters
800
2545
Navigating the Highland Lakes can be a challenge to even
the most experienced boat operator. Varying lake levels
combined with sandbars, shoals and islands can create
dangerous conditions for vessels of all sizes. In addition,
weather conditions can change quickly and can vary from
one area to another.
n Boats are required to have a U.S. Coast
2,000 feet
250
3. Navigate in safe waters by using the next lower msl
contour line on the map. For example, if the current
elevation of Lake LBJ is 819 feet msl, find the 820
feet msl contour line for the approximate location
of the shoreline, then find the 800 feet msl to provide
a minimum depth of 12 feet of water.
Although it is a good practice for infants, small
children and nonswimmers to wear a life jacket
when near the water, everyone should wear a
life jacket when boating. Many boaters believe
that a life jacket close at hand is all the protection
they need in an emergency. If something
happens, such as capsizing, people think they
will be able to put on the life jacket in the water
and save themselves. Doing so is not as easy as
it sounds and it may be impossible to do because
of injury. The best precaution is to boat smart
from the start. Wear your life jacket before you
end up in the water!
Submerged Rocks or Stumps
8
2. The msl contour line on the map that most closely
matches the current msl elevation of the lake
represents the approximate current location of the
shoreline.
Capsizing and falling overboard are the main
causes of small-boat fatalities. Most of these
deaths are preventable if boaters wear a life
jacket. Life jackets today are attractive in
appearance and comfortable to wear. When
properly fitted, they can prevent tragedy.
Less than 770'
17
1. Obtain the current mean sea level (msl) elevation
for the lake on which you will be boating by visiting
the LCRA Web site at www.lcra.org or call the LCRA
at (512) 473 -3333 or 1-800-776-5272, Ext. 3333.
related accidents in the United States.
About 80 percent of these fatalities are
caused by drowning.
810' - 790'
Wirtz Dam
HOW TO USE THIS MAP EFFECTIVELY
WEAR YOUR LIFE JACKET.
n About 800 people die every year in boating-
825' - 810'
820
+
BOAT SMART FROM THE START.
DANGER!
Written description of
danger may be displayed
outside the diamond shape
(rocks, stumps, hazards,
shallow areas).
BOATS KEEP OUT! DIVER DOWN FLAG
Written description of
danger may be displayed
outside crossed diamond
shape (rocks, stumps,
hazards, shallow areas).
No boats allowed within
50 feet of this flag.
Boats within 150 feet must
operate at minimum speed
needed to maintain
steerage and headway.
30º 39.00'
30º 39.00'
The Lower Colorado River Authority is a conservation and reclamation district created by the Texas
Legislature in 1934 to improve the quality of life in the Central Texas area. It receives no tax
money and operates on revenues from wholesale electric and water sales and other services. This
map has been produced by the Lower Colorado River Authority for its own use. Accordingly, certain
information, features, or details may have been emphasized over others or may have been left
out. LCRA does not warrant the accuracy of this map, either as to scale, accuracy or completeness.
M. Ollington. V:\Survey\Project\Community_Services\highlandlakes_hazards_maps\fhfiles\
lbj\combo_map.FH11 April 10, 2007.
820
11
1431
800
820
ive
Ll a n o R
m
r Ar
820
Nightengale
Archaeological
Center
1-800-776-5272,
Ext. 6714
30º 38.00'
30º 38.00'
10
800
820
820
1431
Arant
Cree k
810
9
30º 37.00'
-98º 20.00'
-98º 21.00'
-98º 23.00'
e
re
Dry C
-98º 24.00'
800
-98º 27.00'
-98º 26.00'
-98º 25.00'
30º 37.00'
-98º 22.00'
30º 37.00'
30º 37.00'
k
-98º 24.00'
-98º 25.00'
8
1431
820
820
800
30º 36.00'
30º 36.00'
820
800
SUNRISE BEACH
820
2233
7
2900
800
82
0
800
SHERWOOD SHORES
820
820
30º 35.00'
800
820
6
GRANITE SHOALS
820
820
30º 35.00'
817
800
820
820
820
800
820
820
819
+
800
+
780
800
800
820
780
800
810
2
+
809
800
780
3
800
0
78
780
820
820
800
800
5
780
800
780
800
800
30º 34.00'
820
82
30º 34.00'
0
800
4
Sa
800
820
820
780
nd
800
820
y
760
Cr
ee
k
800
780
-98º 25.00'
818
+
HORSESHOE BAY
800
ar
s
ke
La
780
0
80
820
810
790
800
800
820
30º 33.00'
ll
780
800
820
2831
e
Fa
M
760
800
800
780
bl
780
820
t Cr e
ek
Wirtz Dam
790
760
Walnu
800
800
820
810
760
820
800
800
810
1
810
-98º 27.00'
820
820
790
820
820
Granite Beach
Recreation Area
1-830-693-9172
30º 33.00'
820
COTTONWOOD SHORES
e ek
Cr
oe
sh
rs
e
-98º 20.00'
-98º 21.00'
-98º 22.00'
k
ree
ck C
Slick Ro
-98º 23.00'
-98º 24.00'
-98º 26.00'
71
ek
Pec a n C r e
2147
Ho
Mo
ss
-98º 26.00'
-98º 27.00'
-98º 28.00'
-98º 29.00'
Cr
ee
k
2900