Hello! Perhaps the following selected research articles (or references therein) might be of some interest to you:

The Urban Watershed Continuum: Evolving Spatial and Temporal Dimensions

(KAUSHAL and BELT, 2012)

http://www.nrs.fs.fed.us/pubs/jrnl/2012/nrs_2012_kaushal_001.pdf

Ecological Benefits of Reduced Hydrological Connectivity in Intensively Developped Landscapes (JACKSON and PRINGLE, 2010)

http://coweeta.uga.edu/publications/10412.pdf

The Impact of Urban Patterns on Aquatic Ecosystems: An Empirical Analysis in Puget Low-Land Sub-basins (ALBERTI et al., 2007)

http://faculty.washington.edu/dbooth/urban_patterns.pdf

Changes in Chemical and Physical Properties of Stream Water Across an Urban-Rural Gradient in Western Georgia (SCHOONOVER et al., 2005)

http://www.environmental-expert.com/Files/6063/articles/5471/M316HJ17G2562035.pdf

You might also consider perusing research articles published in ELSEVIER’s Journal of Hydrology 2013 Special Issue entitled, “Hydrology of Peri-Urban Catchments: Processes and Modelling”; Volume 485; pp. 1 – 212.

http://www.sciencedirect.com/science/journal/00221694/485

Thank you very much Hamilton. Will look into them.

You are quite welcome!