diff --git a/md/waterbudget.md b/md/waterbudget.md
index 9012542..6116592 100644
--- a/md/waterbudget.md
+++ b/md/waterbudget.md
@@ -14,4 +14,9 @@ $$
     P = E + R + G 
 $$
 
-Although the above equation appears simple, the terms $E$ and $G$ are practically immeasurable and neither can be determined with any degree of certainty.  To solve for the unknowns, hydrologists must equip themselves with a wide knowledge base of environmental processes from atmospheric sciences (climatology and meteorology), to the biophysical processes of vegetation (photosynthesis), to the structure and mechanics of soils (pedology), to geology and its effect on groundwater (hydrogeology).
\ No newline at end of file
+Although the above equation appears simple, the terms $E$ and $G$ are practically immeasurable and neither can be determined with any degree of certainty.  To solve for the unknowns, hydrologists must equip themselves with a wide knowledge base of environmental processes from atmospheric sciences (climatology and meteorology), to the biophysical processes of vegetation (photosynthesis), to the structure and mechanics of soils (pedology), to geology and its effect on groundwater (hydrogeology).  In addition, anthropogenic influences must also be taken into account. For example, how do agricultural practices affect the soil structure and vegetation distribution?   Given that urban infrastructure generally increases runoff at the expense of recharge and evapotranspiration, how does this change the water balance?
+
+To put
+
+
+[see also glossary](/interpolants/glossary.html)