code: public double getLinkWidth( double coefficient, double exponent, double sdResiduals ) {
          // Returns a random value that follows a gaussian distribution
          double sampleGaussian = rn.nextGaussian() * sdResiduals;
          double upstreamArea = getUpstreamArea(null) / 1000000.0;
  
          double width = coefficient * Math.pow(upstreamArea, exponent) * Math.exp(sampleGaussian);
          return width;
      }
docs: /* (non-Javadoc)
  @see org.hortonmachine.hmachine.modules.hydrogeomorphology.adige.core.IHillSlope#getLinkWidth(double, double, double)