*3.2. Temporal Inequality Results*

The degree of temporal inequality exhibited by each of the selected study sites was generally lower for TN than TP (Figure 3; Table 3), with an average value of *G* for TN (*GTN*) across all years at all sites of 0.44, while the average *G* for TP (*GTP*) across all years of all sites was 0.67. Across all sites, the range of *G* values exhibited by TN was 0.19 to 0.73, while the range for TP was 0.32 to 0.90. The study site with the lowest degree of temporal inequality for TN and TP was Quittapahilla Creek, which had average *GTN* and *GTP* values of 0.24 and 0.41, respectively. The Conewago and West Conewago Creek study sites had the highest average *GTN* and *GTP* values of >0.60 and >0.75, respectively.


**Table 2.** Annual loads for total nitrogen (TN) and total phosphorus (TP) for each selected study site, along with the calculated percent reduction of TN and TP needed to meet the annual load-reduction goals provided in Table 1.


**Table 2.** *Cont.*


**Figure 3.** Lorenz Curves for total nitrogen (TN) and total phosphorus (TP) loads exported for each year for each selected study site. The dotted line represents the "Line of Equality", with temporal inequality signified by the degree to which the Lorenz Curve plots below the line. Blank plots are shown when no load data are available for those years for specific gauging stations.


**Table 3.** Gini Coefficients for total nitrogen (*GTN*) and total phosphorus (*GTP*) loads exported for each year for each selected study site, along with percentages of time that each load is exported during low- and high-flow conditions.


In general, sites with a higher percentage of agricultural and developed area had lower values of *GTN* and *GTP*. The Conodoguinet Creek drainage area comprises approximately 15% forested land, with nearly 85% of the drainage area either developed or agricultural land use (Table 1). Conodoguinet Creek's average values of *GTN* and *GTP* were 0.24 and 0.41, respectively, which were the lowest of all the selected sites (Table 3). West Conewago Creek, which was the site with the highest percentage of forested land use (Table 1), had the highest average value of *GTN* and the second highest average value of *GTP* (0.64 and 0.77, respectively; Table 3).
