Millard Creek begins in a small unnamed pond to the south of a wetland in Harford Township. It flows south-southwest for a few tenths of a mile before turning south-southeast for several tenths of a mile, entering Lenox Township. Here, the creek turns south-southwest for several tenths of a mile before turning east and then southeast and then south-southwest. After several tenths of a mile, it passes through a wetland and a lake before turning south. For the next several tenths of a mile, it flows alongside Jeffers Hill before passing through a wetland and Jeffers Pond. The creek then turns southwest for a short distance before turning south-southeast. After several tenths of a mile, it passes through another wetland and turns southeast for a few tenths of a mile before receiving an unnamed tributary from the. It then turns south for several tenths of a mile, beginning to flow alongside Pennsylvania Route 167 on one side and Hickory Ridge on the other side. The creek then turns southeast for a few tenths of a mile before turning east-southeast and crossing Pennsylvania Route 92. A short distance further downstream, it reaches its confluence with Tunkhannock Creek. Millard Creek is approximately long. It joins Tunkhannock Creek upstream of its mouth.
Hydrology
Millard Creek is not designated as an impaired waterbody. The total sediment load in Millard Creek is per year. Cropland is by far the largest contributor, accounting for per year. Deciduous forest an hay/pastures/grass contribute per year respectively. The annual sediment load contributed by coniferous forest is, while comes from mixed forest and comes from high-intensity development. The annual nitrogen load in Millard Creek is. A total of per year comes from cropland, while comes from groundwater and comes from septic systems and comes from hay/pastures/grass. Deciduous forests contribute per year, coniferous forests contribute, mixed forests contribute, and high-intensity development contributes. The total phosphorus load in Millard Creek is. Annually, comes from cropland, comes from groundwater, comes from hay/pastures/grass, and comes from deciduous forest. A total of per year comes from coniferous forest, mixed forest and high-intensity development contribute each, and septic systems contribute per year. Point-source pollution does not contribute any nitrogen, phosphorus, or sediment to Millard Creek.
Geography and geology
The elevation near the mouth of Millard Creek is above sea level. The elevation near the creek's source is above sea level. The geology in the entire watershed of Millard Creek consists of interbeddedsedimentary rock of the Catksill Formation. The surficial geology in the vicinity of Millard Creek mostly consists of a till known as Wisconsinan Till. However, patches of alluvium, wetlands, and lakes occur along some areas of the creek and the surficial geology on some nearby hills include bedrock consisting ofsandstone and shale. There is also a patch of alluvial fan near the mouth of the creek.
Watershed
The watershed of Millard Creek has an area of. The stream is entirely within the United States Geological Survey quadrangle of Lenoxville. Its mouth is located within of Glenwood. The main land use in the watershed of Millard Creek is forested land, which occupies nearly in the watershed. Agricultural land occupies slightly over and urban land occupies only a very small part of the creek's watershed. The watershed of Millard Creek is relatively long in a north-south direction and relatively narrow in an east-west direction.
The drainage basin of Millard Creek is designated as a Coldwater Fishery and a Migratory Fishery. Wild trout naturally reproduce in Millard Creek from its mouth upstream for. The designated use of the creek is aquatic life.
