impervious cover

News

66% Impervious Cover? Really?

Because the Laurel Springs RV Resort was grandfathered under old drainage regulations, it got away with building a detention pond that was half the size required by current regulations. But assuming the developers were just shrewd businessmen who legally and successfully exploited the system, did they follow the rest of the rules? Let’s look at […]

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Water Flowing Uphill at Laurel Springs RV Resort

Quick, somebody call Ripley. Against all odds, water appears to be flowing uphill at the Laurel Springs RV Resort. Is this an optical delusion? Or could something else be going on here? Could water actually be leaking through the dike? Location of Buried Pipe Back in January, contractors dug a trench through the dike and […]

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August Flood Digest: Brief Summaries of Nine Items in the News

Here’s a short digest of nine flood-related items in the news this month. Fifth Anniversary of Harvey This month marks the fifth anniversary of Hurricane Harvey. It’s hard to pinpoint an exact day for Harvey. The system moved off of Africa on August 13, 2017. It became a tropical storm on the 17th; moved into […]

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65% Impervious Cover?

Only about 4.4% of the land in the U.S. has estimated impervious cover greater than 40%. Usually, high percentages of impervious cover are associated with shopping malls; large apartment complexes; manufacturing and warehouse districts; and densely populated urban neighborhoods. Now there’s a new entry in that category: the Preserve at Woodridge – single-family housing so […]

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Loophole Cuts RV Park Detention Pond Capacity Requirement in Half

When examining the floodwater detention pond capacity for the Kingwood Area’s first RV park at 1355 LAUREL SPRINGS LANE, it seemed impossibly low. The park will build a pond with 7.68 acre feet of stormwater detention. That’s more than the required 6.675 acre feet, but about half of what the City of Houston (COH) would […]

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USGS Says One Third of Harris County Now Impervious Cover

Did you know that one-third of the area in Harris County now has impervious cover? That Montgomery County had a 57.12% net increase of impervious surface area between 2001 and 2019? Or that 10% of land cover in the Lower 48 states changed during that same period? I discovered these and a multitude of other […]

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Need to Reduce Impervious Cover to Prevent Flooding, Protect Water Quality

One of the most thought-provoking articles I have read lately is “The Need to Reduce Impervious Cover to Prevent Flooding and Protect Water Quality.” This brief, well-written article brings many flood-related issues into sharp focus. The Rhode Island Department of Environmental Management produced it. And the National Park Service helped fund it. Even though many […]

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