As floodwaters worked their way down the East and West Forks of the San Jacinto from last week’s heavy rains, they invaded sand mines on both rivers on Easter Sunday, 2023.
Up to 9 inches of rain fell in the headwaters of both rivers during 3 days from 4/5 to 4/7. Atlas-14 rainfall probability statistics indicate that equals a 5-year rain.
The Lake Conroe Dam intercepted much of the West Fork rain and is now releasing it at about 6400 cubic feet per second. There are no dams on the East Fork and the flooding there appears much worse.
West Fork Near Northpark South Development
Near the Northpark South Development on Sorters Road, the West Fork snakes its way through four square miles of sand mines. In the image below, the Hallett Mine on the right seemed secure. But the abandoned sand mines on the left and top center both opened to the river.
Photo taken 4/9/2023 two days after rain stopped.
East Fork Near FM2090 on 4/9/2023
Normally, the East Fork at 2090 is about 30-40 feet wide – the size of the opening in the woods circled in red below. But today, the river swelled to about 2000 feet wide.
Looking south from over East Fork San Jacinto toward FM2090.Looking East along FM2090 across the East Fork.
As the East Fork rose, it invaded the abandoned Texas Concrete Sand and Gravel Mine in Plum Grove.
Abandoned Texas Concrete Sand and Gravel Plum Grove Mine north of FM2090 between East Fork and FM1010
Water entered the northern end, swept through the mine, and punched through the dikes on the southern end, carrying silt and sand with it. See sequence of pictures below.
Looking N toward northern end of mine.Water entered mine in upper left and cut off house.Water then swept under and around house moving south.Looking S.The water then exited back into the river through several breaches in dikes.Rushing water carrying silt and sand found two more breaches close to 2090. Left unchecked, the force of this water will eventually erode the banks of FM2090.Baptist Church Loop Road south of FM2090 was also underwater.
Mine Fails to Meet Guidelines for Abandonment
This mine does not meet TCEQ guidelines for abandonment. The miners left equipment, including a dredge. They also failed to grade stockpiles, remove buildings, and plant grass. Yet somehow, the TCEQ gave them a pass.
This is the second time in less than two years that this mine has been inundated. The public will bear the cost of dredging all the sand carried downriver.
I guess the miners need the money more than you do.
Posted by Bob Rehak on 4/9/2023
2049 Days since Hurricane Harvey
The thoughts expressed in this post represent opinions on matters of public concern and safety. They are protected by the First Amendment of the US Constitution and the Anti-SLAPP Statute of the Great State of Texas.
https://i0.wp.com/reduceflooding.com/wp-content/uploads/2023/04/20230409-DJI_0542.jpg?fit=1200%2C799&ssl=17991200adminadmin2023-04-09 19:10:132023-04-10 17:15:03Swollen San Jacinto East and West Forks Sweep Through Sand Mines
While no flooding in the Lake Houston Area is predicted at this time, the East and West Forks of the San Jacinto are swelling because of 5-9 inches of upstream rainfall–mostly to the north and northwest. As that stormwater works its way downstream, residents should be prepared to take action.
Cumulative rainfall totals including last three days. Note band of heavy rainfall up to almost 9 inches that will funnel down into the East and West Forks of the San Jacinto.
Meteorologists warned us that rainfall totals for Wednesday through Friday could creep upwards of 8-inches where cells started to train. And that is exactly what happened.
Since Wednesday, 7-9 inches of rain fell across southeast Grimes County and western Montgomery County into central Walker County. This caused significant rises on the upper and middle Spring Creek tributaries in northern Waller and southeast Montgomery Counties and Lake Creek. Rises are also ongoing along the West/East Forks of the San Jacinto River (see below).
The threat for additional heavy rainfall will shift south and east today.
Overall the trend in the Lake Houston Area for this afternoon, tonight, and Saturday will be for slowly decreasing rain chances and amounts.
Mainly San Jacinto Watershed Impacted
Because of frequent breaks and manageable rates in the rain, most watersheds have responded well. Getting 8 inches in three days is not as bad as getting 8 inches in three hours…especially when the grounds were so dry.
However totals have eventually piled up across northern Waller, western Montgomery, and central Walker Counties impacting mainly the San Jacinto River watershed.
Spring Creek:
Rises are ongoing along Spring Creek and its tributaries such as Mill, Walnut and Threemile Creeks. They are all producing high flows into Spring Creek from northern Waller, SE Grimes, and SW Montgomery Counties. While Spring Creek will rise today with these inflows, no significant flooding is expected. The channel capacity of the main creek is much larger and should be able to handle incoming inflows.
West Fork of the San Jacinto River:
Inflows will be moving down Lake Creek which has recorded 7-9 inches of rainfall across the upper headwaters of the basin in western Montgomery County as well as local inflow below Lake Conroe Dam and ongoing minor releases from Lake Conroe (around 6,000 cfs this morning). The river is expected to rise to near 48.0 ft over the weekend as upstream run-off moves downstream. This is currently about 1 ft below flood stage at Humble (US 59).
Upstream run-off from Walker and San Jacinto Counites will move downstream toward New Caney (FM 1485) and Plum Grove over the next few days. The river is currently forecasted to rise above flood stage late this weekend and potentially approach moderate flood levels late Sunday into Monday.
The upstream rainfall could impact FM 1485 and low lying areas near the river downstream of the SH 99/FM 1485 bridge crossing.
Jeff Lindner, Harris County Meteorologist
Lake Conroe Report
Lake Conroe released water all day yesterday at more than 6000 cubic feet per second (CFS). Today, the rate has slowed slightly to just under 6000 CFS. The lake level is holding steady at 202.54 feet as of 4/7/23 at 10:40 AM. That’s about a foot and a half above its normal level.
The San Jacinto River Authority adopted a compromise lake lowering policy. In April, May, September and October, they are lowering Lake Conroe a half foot WHEN the City of Houston requests it. The releases are not as great, nor are they automatic as in previous years.
Lake Houston
Lake Houston opened all its floodgates on Tuesday and has released water steadily throughout this event. The lake level was at 41.7 feet at 9:30 AM. Normal is 42.4. So the precautions seem to have paid off. But a test still lies ahead.
Posted by Bob Rehak on 4/7/23
2047 Days since Hurricane Harvey
https://i0.wp.com/reduceflooding.com/wp-content/uploads/2023/04/Rainfall-April-copy.jpg?fit=1894%2C1230&ssl=112301894adminadmin2023-04-07 11:09:502023-04-07 12:05:28Heavy Upstream Rainfall Now Working Its Way Down
Today, Houston Mayor Pro Tem Dave Martin announced the groundbreaking for the Northpark Drive Overpass Project. Weather permitting, it will happen Thursday, April 13.
It took months to acquire right-of-way for the project. Northpark Drive will expand from four lanes to six. And it will include a bridge over Loop 494 and the Union Pacific Railroad Tracks.
The ceremonial groundbreaking will actually happen during the mobilization phase. In coming weeks, residents can expect to see the contractor pre-positioning equipment, supplies, and materials for construction.
Finally, an Elevated Evac Route over Railroad
The Northpark Drive Overpass Project will alleviate congestion, enhance accessibility, and increase safety in the Kingwood area. The 2015 Kingwood Area Mobility Study, commissioned by TIRZ 10, concluded this project is critical to ensuring public safety.
Local leaders have worried for years about evacuating Kingwood in the event of a natural disaster or chemical spill during a derailment, similar to those that have made headlines around the country lately.
The first phase of this project will go from I-69 to the Kingwood Diversion Ditch
Project extent map provided by City.
A second phase, not yet approved, will extend to Woodland Hills Drive and include elevated bridges over the Diversion Ditch and Bens Branch.
Improved drainage that meets new post-Harvey Atlas-14 requirements.
Wider pedestrian walkways.
Enhanced lighting and landscaping.
Elimination of center ditch.
TIRZ Meetings Open to Public
Safety Considerations during Construction
Once construction commences, please be aware of flagmen and orange traffic cones that will be put in place on-site to help with traffic flow through the construction zone as the project may require a one-lane closure. Two-way traffic will be maintained at all times. Businesses and residents will have access to driveways and sidewalks at all times and may experience an increase in noise levels due to trucks and equipment in the area.
For a detailed traffic plan during construction, residents can view the plans here (pages 43-163).
As a reminder, TIRZ Board meetings are open to the public and held on the second Thursday of each month at 8:00 a.m. Visit the LHRA website for more information on the Northpark Drive Overpass Project and view the 2023 Board of Directors Calendar.
Please contact the District E office by phone at (832) 393-3008 or by email at districte@houstontx.gov with any questions or comments.
Posted by Bob Rehak on 4/6/2023
2046 Days since Hurricane Harvey
https://i0.wp.com/reduceflooding.com/wp-content/uploads/2023/04/Screenshot-2023-04-06-at-4.35.38-PM.png?fit=1672%2C880&ssl=18801672adminadmin2023-04-06 17:30:132023-04-06 18:40:37Northpark Overpass Groundbreaking Announced
Swollen San Jacinto East and West Forks Sweep Through Sand Mines
As floodwaters worked their way down the East and West Forks of the San Jacinto from last week’s heavy rains, they invaded sand mines on both rivers on Easter Sunday, 2023.
Up to 9 inches of rain fell in the headwaters of both rivers during 3 days from 4/5 to 4/7. Atlas-14 rainfall probability statistics indicate that equals a 5-year rain.
The Lake Conroe Dam intercepted much of the West Fork rain and is now releasing it at about 6400 cubic feet per second. There are no dams on the East Fork and the flooding there appears much worse.
West Fork Near Northpark South Development
Near the Northpark South Development on Sorters Road, the West Fork snakes its way through four square miles of sand mines. In the image below, the Hallett Mine on the right seemed secure. But the abandoned sand mines on the left and top center both opened to the river.
East Fork Near FM2090 on 4/9/2023
Normally, the East Fork at 2090 is about 30-40 feet wide – the size of the opening in the woods circled in red below. But today, the river swelled to about 2000 feet wide.
As the East Fork rose, it invaded the abandoned Texas Concrete Sand and Gravel Mine in Plum Grove.
Water entered the northern end, swept through the mine, and punched through the dikes on the southern end, carrying silt and sand with it. See sequence of pictures below.
Mine Fails to Meet Guidelines for Abandonment
This mine does not meet TCEQ guidelines for abandonment. The miners left equipment, including a dredge. They also failed to grade stockpiles, remove buildings, and plant grass. Yet somehow, the TCEQ gave them a pass.
This is the second time in less than two years that this mine has been inundated. The public will bear the cost of dredging all the sand carried downriver.
Ironically, a bill introduced by State Rep. Charles Cunningham requiring financial surety for sand mine reclamation remains bottled up in the House Natural Resources Committee. See HB1093.
I guess the miners need the money more than you do.
Posted by Bob Rehak on 4/9/2023
2049 Days since Hurricane Harvey
The thoughts expressed in this post represent opinions on matters of public concern and safety. They are protected by the First Amendment of the US Constitution and the Anti-SLAPP Statute of the Great State of Texas.
Heavy Upstream Rainfall Now Working Its Way Down
While no flooding in the Lake Houston Area is predicted at this time, the East and West Forks of the San Jacinto are swelling because of 5-9 inches of upstream rainfall–mostly to the north and northwest. As that stormwater works its way downstream, residents should be prepared to take action.
Meteorologists warned us that rainfall totals for Wednesday through Friday could creep upwards of 8-inches where cells started to train. And that is exactly what happened.
Since Wednesday, 7-9 inches of rain fell across southeast Grimes County and western Montgomery County into central Walker County. This caused significant rises on the upper and middle Spring Creek tributaries in northern Waller and southeast Montgomery Counties and Lake Creek. Rises are also ongoing along the West/East Forks of the San Jacinto River (see below).
The threat for additional heavy rainfall will shift south and east today.
Overall the trend in the Lake Houston Area for this afternoon, tonight, and Saturday will be for slowly decreasing rain chances and amounts.
Mainly San Jacinto Watershed Impacted
Because of frequent breaks and manageable rates in the rain, most watersheds have responded well. Getting 8 inches in three days is not as bad as getting 8 inches in three hours…especially when the grounds were so dry.
However totals have eventually piled up across northern Waller, western Montgomery, and central Walker Counties impacting mainly the San Jacinto River watershed.
Spring Creek:
Rises are ongoing along Spring Creek and its tributaries such as Mill, Walnut and Threemile Creeks. They are all producing high flows into Spring Creek from northern Waller, SE Grimes, and SW Montgomery Counties. While Spring Creek will rise today with these inflows, no significant flooding is expected. The channel capacity of the main creek is much larger and should be able to handle incoming inflows.
West Fork of the San Jacinto River:
Inflows will be moving down Lake Creek which has recorded 7-9 inches of rainfall across the upper headwaters of the basin in western Montgomery County as well as local inflow below Lake Conroe Dam and ongoing minor releases from Lake Conroe (around 6,000 cfs this morning). The river is expected to rise to near 48.0 ft over the weekend as upstream run-off moves downstream. This is currently about 1 ft below flood stage at Humble (US 59).
East Fork of the San Jacinto River:
Upstream run-off from Walker and San Jacinto Counites will move downstream toward New Caney (FM 1485) and Plum Grove over the next few days. The river is currently forecasted to rise above flood stage late this weekend and potentially approach moderate flood levels late Sunday into Monday.
Lake Conroe Report
Lake Conroe released water all day yesterday at more than 6000 cubic feet per second (CFS). Today, the rate has slowed slightly to just under 6000 CFS. The lake level is holding steady at 202.54 feet as of 4/7/23 at 10:40 AM. That’s about a foot and a half above its normal level.
The San Jacinto River Authority adopted a compromise lake lowering policy. In April, May, September and October, they are lowering Lake Conroe a half foot WHEN the City of Houston requests it. The releases are not as great, nor are they automatic as in previous years.
Lake Houston
Lake Houston opened all its floodgates on Tuesday and has released water steadily throughout this event. The lake level was at 41.7 feet at 9:30 AM. Normal is 42.4. So the precautions seem to have paid off. But a test still lies ahead.
Posted by Bob Rehak on 4/7/23
2047 Days since Hurricane Harvey
Northpark Overpass Groundbreaking Announced
Today, Houston Mayor Pro Tem Dave Martin announced the groundbreaking for the Northpark Drive Overpass Project. Weather permitting, it will happen Thursday, April 13.
It took months to acquire right-of-way for the project. Northpark Drive will expand from four lanes to six. And it will include a bridge over Loop 494 and the Union Pacific Railroad Tracks.
Groundbreaking During Mobilization
The Lake Houston Redevelopment Authority (LHRA)/Tax Increment Reinvestment Zone 10 Board has awarded a contract to Harper Brothers Construction for the project.
The ceremonial groundbreaking will actually happen during the mobilization phase. In coming weeks, residents can expect to see the contractor pre-positioning equipment, supplies, and materials for construction.
Finally, an Elevated Evac Route over Railroad
The Northpark Drive Overpass Project will alleviate congestion, enhance accessibility, and increase safety in the Kingwood area. The 2015 Kingwood Area Mobility Study, commissioned by TIRZ 10, concluded this project is critical to ensuring public safety.
Local leaders have worried for years about evacuating Kingwood in the event of a natural disaster or chemical spill during a derailment, similar to those that have made headlines around the country lately.
The first phase of this project will go from I-69 to the Kingwood Diversion Ditch
A second phase, not yet approved, will extend to Woodland Hills Drive and include elevated bridges over the Diversion Ditch and Bens Branch.
Each phase will take approximately two years, according to the LHRA. Work will begin near I-69 and move east. The City is only breaking ground on the first phase at this time.
The project promises multiple benefits:
TIRZ Meetings Open to Public
Safety Considerations during Construction
Once construction commences, please be aware of flagmen and orange traffic cones that will be put in place on-site to help with traffic flow through the construction zone as the project may require a one-lane closure. Two-way traffic will be maintained at all times. Businesses and residents will have access to driveways and sidewalks at all times and may experience an increase in noise levels due to trucks and equipment in the area.
For a detailed traffic plan during construction, residents can view the plans here (pages 43-163).
As a reminder, TIRZ Board meetings are open to the public and held on the second Thursday of each month at 8:00 a.m. Visit the LHRA website for more information on the Northpark Drive Overpass Project and view the 2023 Board of Directors Calendar.
Please contact the District E office by phone at (832) 393-3008 or by email at districte@houstontx.gov with any questions or comments.
Posted by Bob Rehak on 4/6/2023
2046 Days since Hurricane Harvey