I have a river network (Line with arrow as shown in image below) and I need to create perpendicular lines to the river at every 15 meters as you walk along it (see image below). Is there a function in PostGIS capable of doing this?

I have a river network (Line with arrow as shown in image below) and I need to create perpendicular lines to the river at every 15 meters as you walk along it (see image below). 

Is there a function in PostGIS capable of doing this?

I have a river network (Line with arrow as shown in image below) and I need to create perpendicular lines to the river at every 15 meters as you walk along it (see image below). Is there a function in PostGIS capable of doing this?

I have a river network (Line with arrow as shown in image below) and I need to create perpendicular lines to the river at every 15 meters as you walk along it (see image below). Is there a function in PostGIS capable of doing this?