Next Article in Journal
Evaluation and Bias Correction of CHIRP Rainfall Estimate for Rainfall-Runoff Simulation over Lake Ziway Watershed, Ethiopia
Previous Article in Journal
Drought and Desertification in Iran
Open AccessArticle

A Quantitative Approach to Evaluate Changes in Hydrologic Conditions of Headwater Streams: A Case Study of Restoration and Recovery Following Longwall Mine Subsidence

1
CONSOL Energy, Inc., Canonsburg, PA 15317, USA
2
Civil & Environmental Consultants, Inc., Pittsburgh, PA 15205, USA
*
Author to whom correspondence should be addressed.
Hydrology 2019, 6(3), 67; https://doi.org/10.3390/hydrology6030067
Received: 13 May 2019 / Revised: 22 July 2019 / Accepted: 5 August 2019 / Published: 8 August 2019
Mine subsidence can induce streambed ruptures that pirate surface water from a stream. Current understanding of the effects of longwall mining on streams lacks rigorous analytical approaches to detect hydrologic effects and does not consider the efficacy of streambed restoration techniques to address flow disruption. CONSOL Pennsylvania Coal Company, LLC (CPCC) collected and analyzed pre-mining, post-mining, and post-restoration stream discharge and flow duration data from 51.9 km of streams overlying its Bailey Mine to define pre-mining flow variability, detect post-mining changes, and evaluate post-intervention flow recovery. The primary intervention method for restoring stream flow was bedrock permeation grouting. Pre-mine and post-mine baseflow data were compared using both parametric and non-parametric hypothesis testing, which yielded similar results. An environmental flow assessment method for headwater streams using probabilistic risk assessment and correlation analysis of change threshold criteria was developed to differentiate hydrologic change as induced by mine subsidence or explained by natural variability. The method is objective, pragmatic, and statistically delimited. View Full-Text
Keywords: mine subsidence; environmental flow; headwater stream; flow restoration; fracture grouting mine subsidence; environmental flow; headwater stream; flow restoration; fracture grouting
Show Figures

Graphical abstract

MDPI and ACS Style

Silvis, J.M.; Benson, B.C.; Shema, M.L.; Haibach, M.R. A Quantitative Approach to Evaluate Changes in Hydrologic Conditions of Headwater Streams: A Case Study of Restoration and Recovery Following Longwall Mine Subsidence. Hydrology 2019, 6, 67.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop