#########################################################
# bmpinfo.cgi #
# written in 2002 by Jared Osborn, MVHS Sysop #
# e-mail jaosborn@mbhs.edu to contact #
# #
# General Description: #
# this script writes the user's information to the log, #
# then creates the bmp information page #
#########################################################
#!/usr/bin/perl
print "Content-type: text/html\n\n";
# Get Query Variables see parseform.pl for comments - taken from scatterplot.cgi
$buffer = $ENV{"QUERY_STRING"};
@pairs = split(/&/, $buffer);
foreach $pair (@pairs) {
($nume, $value) = split(/=/, $pair);
$value =~ tr/+/ /;
$value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;
$value =~ s///g;
$query{$nume} = $value;
}
$user = $query{'user'};
$date = `date`; chomp($date);
$topgraph = $query{'topgraph'};
$topstation = $query{'topstation'};
$topstationname = $query{'stationname'};
$topfrom = $query{'topfrom'};
$topto = $query{'topto'};
$topyrange = $query{'topyrange'};
$topyrangeto = $query{'topyrangeto'};
$bottomgraph = $query{'bottomgraph'};
$bottomstation = $query{'bottomstation'};
$bottomstationname = $query{'bottomstationname'};
$botfrom = $query{'botfrom'};
$botto = $query{'botto'};
$botyrange = $query{'botyrange'};
$botyrangeto = $query{'botyrangeto'};
$topbmp = $query {'topbmp'};
$botbmp = $query {'botbmp'};
$place = $query {'place'};
open (LOGFILE,">>logfile"); #log file
print LOGFILE "\n\n$user viewed $place bmp info at $date";
print LOGFILE "\nTop Station: $topstation $topstationname $topgraph x from $topfrom to $topto";
if($topyrange eq "" && $topyrangeto eq "") {
print LOGFILE " y default";
}
else {
print LOGFILE " y from $topyrange to $topyrangeto";
}
if($topbmp eq 1){
print LOGFILE " w/bmp";
}
elsif($topbmp eq 0){
print LOGFILE " w/o bmp";
}
print LOGFILE "\nBottom Station: $bottomstation $bottomstationname $bottomgraph x from $botfrom to $botto";
if($botyrange eq "" && $botyrangeto eq ""){
print LOGFILE " y default";
}
else {
print LOGFILE " y from $botyrange to $botyrangeto";
}
if ($botbmp eq 1) {
print LOGFILE " w/bmp";
}
elsif ($botbmp eq 0) {
print LOGFILE " w/o bmp";
}
if(($topstation eq 1 && $place eq 'top') || ($bottomstation eq 1 && $place eq 'bottom')){ &printInfoLogging;}
elsif(($topstation eq 2 && $place eq 'top') || ($bottomstation eq 2 && $place eq 'bottom')){ &printInfoStripCropping;}
elsif(($topstation eq 3 && $place eq 'top') || ($bottomstation eq 3 && $place eq 'bottom')){ &printInfoStreamBuffer;}
elsif(($topstation eq 4 && $place eq 'top') || ($bottomstation eq 4 && $place eq 'bottom')){ &printInfoRunoffPond;}
elsif(($topstation eq 5 && $place eq 'top') || ($bottomstation eq 5 && $place eq 'bottom')){ &printInfoMarsh;}
elsif(($topstation eq 6 && $place eq 'top') || ($bottomstation eq 6 && $place eq 'bottom')){ &printInfoStormSanitary;}
sub printInfoLogging{
print <<"HTML";
Clear Cutting Information Page
Clear Cutting Information Page
The forest's value is not only in
the timber but also plant diversity or variety, animal
diversity, climate control, control of the watershed, and aesthetic solve.
Clear
cutting forests and regulation on the stream banks vegetation
results in increased
erosion rates, as well as more severe and frequent flooding as the natural
storage capacity in the soil is reduced. Follow the principles below by
leaving vegetation.
- Don't cut more trees
than can be grown on an annual basis.
- Protect
stream beds.
- Let dead trees stand because they provide homes
to small animals, as well as provide shelter for animals.
HTML
}
sub printInfoStripCropping{
print <<"HTML";
Strip Cropping Information Page
Strip Cropping Information Page
Strip cropping is one of the best practices to reduce water erosion in
agriculture. Strips of close growing crop or sod are alternated with strips of row
crops. There are two kinds of strip cropping:
1) Contour strip cropping
Strips are planted on the contour
2) Field strip cropping
Strips
are planted across the slope of the field
There are several ways in
which strip cropping improves water quality. It reduces erosion and promotes
infiltration of water into the ground so that the amount of sediment carried from
the field in surface runoff is reduced. Since agricultural chemicals accompany
the sediment, runoff of these chemicals is also reduced.
An advantage of
using sod for strip cropping is that it keeps excessive amounts of soluable
fertilizers and pesticides from leaching through to the ground water. Sod itself does not
require much fertilization.
Many factors must be considered in planning
for strip cropping:.
- The width of the strips is determined by
- the crops grown,
- land slope
- machinery widths.
- Other practices required to control concentrated flow erosion are:
- grassed
waterways,
- water and sediment control basins,
- diversions
-
The sod used can be a benefit through hay and seed production
- All tillage and
planting of crops should be parallel to the strip boundaries.
HTML
}
sub printInfoStreamBuffer{
print <<"HTML";
Stream Buffer Information Page
Stream Buffer Information Page
Streambanks should be protected from
erosion
that may be caused by water and by humans and animals crossing the banks.
Typically, such banks need protection when there is no longer sufficient
vegetation to hold the soil in place. Tree roots form a protective net
for
the soil. Without this, erosion may result in unacceptable sediment load.
Several kinds of improvements and protection are possible.
- Removing channel obstructions such as a fallen tree or a bar that
is deflecting flow into the bank. Such factors should be considered
before deciding on expensive structural protection.
-
Implement a Livestock
Exclusion
and Livestock Watering Facility. This should be done to avoid wear on the
banks by large animals.
- Vegetative Protection in areas where grass or
trees will provide adequate protection, species should be selected that are
well suited to soil conditions and can withstand periodic flooding.
- log bundles
- planting of willows or other plants withstanding high
velocity flow.
- Structural Protection Cost can be very high. In
such situations the benefits of expensive structural streambank protection
may not justify the cost.
- rock
- riprap
- interlocking
concrete blocks
- formed concrete
Leaving a buffer zone of
uncut vegetation around the shoreline to aid in building up nutrients that
would otherwise run into a body of water. Also leaving a buffer zone of
natural vegetation around the edges of the wetland will help protect the
wetland from damage due to storm water run off, fertilizers, or
pesticides.
HTML
}
sub printInfoRunoffPond{
print <<"HTML";
Runoff Pond Information Page
Runoff Pond Information Page
In
natural areas, rain can soak into the
ground. But in urban areas, pavement and roads keep this from happening.
Instead, water is collected by storm sewers and directed to creeks and
streams. It may carry lots of sediment with it that can harm water
quality. To solve this problem, whenever new construction takes place,
contractors often must include plans for a wet pond, also called a
sediment
pond. [This is especially important the construction will impervious
material, such as asphalt or concrete, replacing natural vegetation.] So
you will often see a wet pond next to a large parking lot or a new housing
development. In a parking lot, rain will wash oil from cars down to the
wet pond.
Wet ponds hold runoff water from storms, but the ponds always
have some water. Sediment and other pollutants settle out of the water so
that when water is discharged from the pond, it does not carry these
materials into a stream. Wet ponds usually contain vegetation so that the
plants roots may hold the sediment and use the nutrients that are often
contained in urban runoff. The ponds can also mitigate flooding in theevent of a major storm and thus control impact downstream. Many of the
lakes in developments are actually detention or retention wet ponds
which developers have designed to look like natural bodies of water. If
they are properly constructed and maintained, such ponds can be
extremely effective in removing sediment and in reducing
nutrients.
HTML
}
sub printInfoMarsh{
print <<"HTML";
Wetlands Area
Protect Wetlands
Although wetlands act as efficient buffering environments for
ecosystems, they can be fragile, too. Birds and other animal life prefer
environments with limited noise pollution and human disturbance.
Preventing vehicular human access limits humun use, and helps
prevent runoff of toxins from impermeable road surfaces.
HTML
}
sub printInfoStormSanitary{
print <<"HTML";
Storm and Sanitary Sewer Information Page
Storm and Sanitary Sewer Information Page
By seperating storm and sanitary sewers, the biggest change would be a decrease in nutrients from raw sewage. Another possibility
is to t
reat storm water discharge.
HTML
}